diff --git a/.gitignore b/.gitignore
index de9489d5f..76eef990e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,6 @@
 docs/html/
 build/
-.vscode/
\ No newline at end of file
+.vscode/
+_deps/
+.ipynb_checkpoints/
+.DS_Store
\ No newline at end of file
diff --git a/examples/build-examples-log.txt b/examples/build-examples-log.txt
index 5a7c80e84..99826fa48 100644
--- a/examples/build-examples-log.txt
+++ b/examples/build-examples-log.txt
@@ -14,7 +14,7 @@
 ../examples/examples-stream/streams-adc-serial -> rc=0
 ../examples/examples-stream/streams-adsr-i2s -> rc=0
 ../examples/examples-stream/streams-generator-analog -> rc=0
-../examples/examples-stream/streams_generator_bin_serial -> rc=0
+../examples/examples-stream/streams-generator-bin-serial -> rc=0
 ../examples/examples-stream/streams-generator-formatconverter-i2s -> rc=0
 ../examples/examples-stream/streams-generator_fromarray-analog -> rc=0
 ../examples/examples-stream/streams-generator-i2s -> rc=0
@@ -22,12 +22,13 @@
 ../examples/examples-stream/streams-generator-pwm -> rc=0
 ../examples/examples-stream/streams-generator-serial -> rc=0
 ../examples/examples-stream/streams-generator-spdif -> rc=0
+../examples/examples-stream/streams-generator-timedstream-serial -> rc=0
 ../examples/examples-stream/streams-generator-volume -> rc=0
 ../examples/examples-stream/streams-generator-wm8960 -> rc=0
 ../examples/examples-stream/streams-i2s-filter-i2s -> rc=0
 ../examples/examples-stream/streams-i2s-i2s -> rc=0
 ../examples/examples-stream/streams-i2s-i2s-2 -> rc=0
-../examples/examples-stream/streams-i2s_pdm-serial -> rc=0
+../examples/examples-stream/streams-i2s_pdm-serial -> rc=1
 ../examples/examples-stream/streams-i2s-serial -> rc=0
 ../examples/examples-stream/streams-i2s-serial_16bit -> rc=0
 ../examples/examples-stream/streams-i2s-tf -> rc=0
@@ -69,20 +70,21 @@
 ../examples/examples-audiokit/streams-generator_sinfromtable-audiokit -> rc=0
 ../examples/examples-audiokit/streams-memory_mp3-audiokit -> rc=0
 ../examples/examples-audiokit/streams-memory_pcm-mixer-audiokit -> rc=0
-../examples/examples-audiokit/streams-pins-audiokit -> rc=0
-../examples/examples-audiokit/streams-sd-audiokit -> rc=0
+../examples/examples-audiokit/streams-pins-audiokit -> rc=1
+../examples/examples-audiokit/streams-sd_flac-audiokit -> rc=0
 ../examples/examples-audiokit/streams-sdmmc_wav-audiokit -> rc=0
+../examples/examples-audiokit/streams-sd_mp3-audiokit -> rc=0
 ../examples/examples-audiokit/streams-synth-audiokit -> rc=0
 ../examples/examples-audiokit/streams-synthbasic1-audiokit -> rc=0
 ../examples/examples-audiokit/streams-synthbasic2-audiokit -> rc=0
-../examples/examples-audiokit/streams-synthbasic3-audiokit -> rc=1
+../examples/examples-audiokit/streams-synthbasic3-audiokit -> rc=0
 ../examples/examples-audiokit/streams-synthstk-audiokit -> rc=0
 ../examples/examples-audiokit/streams-tf-audiokit -> rc=0
 ../examples/examples-tts/streams-azure_tts-i2s -> rc=0
-../examples/examples-tts/streams-espeak-audiokit -> rc=0
-../examples/examples-tts/streams-espeak-i2s -> rc=0
-../examples/examples-tts/streams-flite-audiokit -> rc=0
-../examples/examples-tts/streams-flite-i2s -> rc=0
+../examples/examples-tts/streams-espeak-audiokit -> rc=1
+../examples/examples-tts/streams-espeak-i2s -> rc=1
+../examples/examples-tts/streams-flite-audiokit -> rc=1
+../examples/examples-tts/streams-flite-i2s -> rc=1
 ../examples/examples-tts/streams-google-audiokit -> rc=0
 ../examples/examples-tts/streams-sam-audiokit -> rc=0
 ../examples/examples-tts/streams-sam-i2s -> rc=0
@@ -135,25 +137,25 @@
 ../examples/examples-dsp/examples-faust/streams-i2s-faust_copy-i2s -> rc=0
 ../examples/examples-dsp/examples-faust/streams-i2s-faust_guitarix-i2s -> rc=0
 ../examples/examples-dsp/examples-faust/streams-i2s-faust_pitchshift-i2s -> rc=0
-../examples/examples-communication/a2dp/base-adc-a2dp -> rc=0
-../examples/examples-communication/a2dp/base-generator-a2dp -> rc=0
-../examples/examples-communication/a2dp/base-i2s-a2dp -> rc=0
-../examples/examples-communication/a2dp/base-player-a2dp -> rc=0
 ../examples/examples-communication/a2dp/basic-a2dp-audiokit -> rc=0
 ../examples/examples-communication/a2dp/basic-a2dp-eq-audiokit -> rc=0
 ../examples/examples-communication/a2dp/basic-a2dp-fft -> rc=0
 ../examples/examples-communication/a2dp/basic-a2dp-fft-led -> rc=0
-../examples/examples-communication/a2dp/basic-a2dp-i2s -> rc=1
+../examples/examples-communication/a2dp/basic-a2dp-i2s -> rc=0
 ../examples/examples-communication/a2dp/basic-a2dp-mixer-i2s -> rc=0
-../examples/examples-communication/a2dp/basic-a2dp-spdif -> rc=0
+../examples/examples-communication/a2dp/basic-adc-a2dp -> rc=0
 ../examples/examples-communication/a2dp/basic-audiokit-a2dp -> rc=0
+../examples/examples-communication/a2dp/basic-generator-a2dp -> rc=0
+../examples/examples-communication/a2dp/basic-i2s-a2dp -> rc=0
+../examples/examples-communication/a2dp/basic-player-a2dp -> rc=0
 ../examples/examples-communication/a2dp/player-sd_a2dp-audiokit -> rc=0
 ../examples/examples-communication/a2dp/player-sdfat-a2dp -> rc=0
 ../examples/examples-communication/a2dp/streams-a2dp-audiokit -> rc=0
 ../examples/examples-communication/a2dp/streams-a2dp-serial -> rc=0
+../examples/examples-communication/a2dp/streams-a2dp-spdif -> rc=0
 ../examples/examples-communication/a2dp/streams-generator-a2dp -> rc=0
 ../examples/examples-communication/a2dp/streams-i2s-a2dp -> rc=0
-../examples/examples-communication/a2dp/streams-synth-a2dp -> rc=1
+../examples/examples-communication/a2dp/streams-synth-a2dp -> rc=0
 ../examples/examples-communication/esp-now/codec/communication-codec-espnow-receive -> rc=0
 ../examples/examples-communication/esp-now/codec/communication-codec-espnow-receive_measure -> rc=0
 ../examples/examples-communication/esp-now/codec/communication-codec-espnow-send -> rc=0
@@ -172,16 +174,16 @@
 ../examples/examples-communication/vban/streams-audiokit-vban -> rc=0
 ../examples/examples-communication/vban/streams-generator-vban -> rc=0
 ../examples/examples-communication/vban/streams-vban-audiokit -> rc=0
-../examples/examples-communication/rtsp/communication-audiokit-rtsp -> rc=1
-../examples/examples-communication/rtsp/communication-codec-rtsp -> rc=1
-../examples/examples-communication/rtsp/communication-generator-rtsp -> rc=1
+../examples/examples-communication/rtsp/communication-audiokit-rtsp -> rc=0
+../examples/examples-communication/rtsp/communication-codec-rtsp -> rc=0
+../examples/examples-communication/rtsp/communication-generator-rtsp -> rc=0
 ../examples/examples-communication/rtsp/communication-rtsp-audiokit -> rc=0
 ../examples/examples-communication/rtsp/communication-rtsp-i2s -> rc=0
 ../examples/examples-communication/serial/send-8bit-receive -> rc=0
-../examples/examples-communication/serial/send-adpcm_framed-receive -> rc=1
+../examples/examples-communication/serial/send-adpcm_framed-receive -> rc=0
 ../examples/examples-communication/serial/send-adpcm-receive -> rc=0
 ../examples/examples-communication/serial/send-receive -> rc=0
-../examples/examples-communication/snapcast/snapclient-i2s -> rc=1
+../examples/examples-communication/snapcast/snapclient-i2s -> rc=0
 ../examples/examples-communication/spi/spi-master -> rc=0
 ../examples/examples-communication/spi/spi-slave-esp32 -> rc=0
 ../examples/examples-communication/spi/spi-slave-rp2040 -> rc=1
@@ -189,7 +191,8 @@
 ../examples/examples-communication/http-client/player-url_icy-audiokit -> rc=0
 ../examples/examples-communication/http-client/player-url_icy-i2s -> rc=0
 ../examples/examples-communication/http-client/player-url_subclass-i2s -> rc=0
-../examples/examples-communication/http-client/streams-eth_url_mp3_helix-i2s -> rc=1
+../examples/examples-communication/http-client/streams-eth_url_mp3_helix-i2s -> rc=0
+../examples/examples-communication/http-client/streams-http_post -> rc=0
 ../examples/examples-communication/http-client/streams-url_aac-audiokit -> rc=0
 ../examples/examples-communication/http-client/streams-url_aac-i2s -> rc=0
 ../examples/examples-communication/http-client/streams-url-file -> rc=0
@@ -202,7 +205,8 @@
 ../examples/examples-communication/http-client/streams-url_mp3_mad-i2s -> rc=0
 ../examples/examples-communication/http-client/streams-url_mp3-metadata -> rc=0
 ../examples/examples-communication/http-client/streams-url_mp3-metadata2 -> rc=0
-../examples/examples-communication/http-client/streams-url_mts-hex -> rc=1
+../examples/examples-communication/http-client/streams-url_mts-hex -> rc=0
+../examples/examples-communication/http-client/streams-url_post -> rc=0
 ../examples/examples-communication/http-client/streams-url_raw-i2s -> rc=0
 ../examples/examples-communication/http-client/streams-url_raw-serial -> rc=0
 ../examples/examples-communication/http-client/streams-url_vorbis_i2s -> rc=0
@@ -233,7 +237,7 @@
 ../examples/tests/codecs/test-codec-adpcm-xq -> rc=0
 ../examples/tests/codecs/test-codec-aptx -> rc=0
 ../examples/tests/codecs/test-codec-base64 -> rc=0
-../examples/tests/codecs/test-codec-codec2 -> rc=0
+../examples/tests/codecs/test-codec-codec2 -> rc=1
 ../examples/tests/codecs/test-codec-flac -> rc=0
 ../examples/tests/codecs/test-codec-g711_alaw -> rc=0
 ../examples/tests/codecs/test-codec-g711_ulaw -> rc=0
@@ -248,20 +252,22 @@
 ../examples/tests/codecs/test-codec-opus -> rc=0
 ../examples/tests/codecs/test-codec-opusogg -> rc=0
 ../examples/tests/codecs/test-codec-sbc -> rc=0
-../examples/tests/codecs/test-compile-all -> rc=1
+../examples/tests/codecs/test-compile-all -> rc=0
 ../examples/tests/codecs/test-container-binary -> rc=0
 ../examples/tests/codecs/test-container-binary-meta -> rc=0
 ../examples/tests/codecs/test-container-ogg -> rc=0
 ../examples/tests/codecs/test-memory-helix -> rc=0
 ../examples/tests/codecs/test-mp3-helix -> rc=0
 ../examples/tests/codecs/test-mp3-helix-reading -> rc=0
-../examples/tests/codecs/test-mp3-mad -> rc=0
-../examples/tests/codecs/test-streaming-adapter -> rc=0
-../examples/tests/communications/* -> rc=1
 ../examples/tests/concurrency/NBuffer -> rc=0
 ../examples/tests/concurrency/synchBufferRTOS -> rc=0
 ../examples/tests/concurrency/synchNBuffer -> rc=0
 ../examples/tests/concurrency/synchRingBuffer -> rc=0
+../examples/tests/conversion/channel-converter-avg -> rc=0
+../examples/tests/conversion/channel-converter-bin -> rc=0
+../examples/tests/conversion/channel-converter-bindiff -> rc=0
+../examples/tests/conversion/channel-converter-decimate -> rc=0
+../examples/tests/conversion/channel-converter-diff -> rc=0
 ../examples/tests/conversion/channel-converter-increase-in -> rc=0
 ../examples/tests/conversion/channel-converter-increase-out -> rc=0
 ../examples/tests/conversion/channel-converter-reduce-in -> rc=0
@@ -289,10 +295,11 @@
 ../examples/tests/fft/fft-cmsis -> rc=1
 ../examples/tests/fft/fft-esp32 -> rc=0
 ../examples/tests/fft/fft-espressif -> rc=0
-../examples/tests/fft/fft-kiss -> rc=0
+../examples/tests/fft/fft-kiss -> rc=1
 ../examples/tests/fft/fft-real -> rc=0
 ../examples/tests/fft/fft-topn -> rc=0
 ../examples/tests/fft/fft-window -> rc=0
+../examples/tests/filters/test-90deg -> rc=0
 ../examples/tests/filters/test-filter -> rc=0
 ../examples/tests/filters/test-median-filter -> rc=0
 ../examples/tests/performance/mp3-Speed -> rc=0
diff --git a/examples/examples-communication/serial/send-adpcm_framed-receive/send-adpcm_framed-receive.ino b/examples/examples-communication/serial/send-adpcm_framed-receive/send-adpcm_framed-receive.ino
index cd082bd38..063274c55 100644
--- a/examples/examples-communication/serial/send-adpcm_framed-receive/send-adpcm_framed-receive.ino
+++ b/examples/examples-communication/serial/send-adpcm_framed-receive/send-adpcm_framed-receive.ino
@@ -28,8 +28,8 @@ ADPCMEncoder enc(AV_CODEC_ID_ADPCM_IMA_WAV);
 ADPCMDecoder dec(AV_CODEC_ID_ADPCM_IMA_WAV);
 BinaryContainerEncoder bin_enc(&enc);
 BinaryContainerDecoder bin_dec(&dec);
-EncodedAudioStream enc_stream(&serial, &bin_enc);
-EncodedAudioStream dec_stream(&out, &bin_dec);
+EncodedAudioOutput enc_stream(&serial, &bin_enc);
+EncodedAudioOutput dec_stream(&out, &bin_dec);
 Throttle throttle(enc_stream);
 static int frame_size = 498;
 StreamCopy copierOut(throttle, sound, frame_size);  // copies sound into Serial
diff --git a/examples/examples-communication/snapcast/snapclient-i2s/snapclient-i2s.h b/examples/examples-communication/snapcast/snapclient-i2s/snapclient-i2s.ino
similarity index 71%
rename from examples/examples-communication/snapcast/snapclient-i2s/snapclient-i2s.h
rename to examples/examples-communication/snapcast/snapclient-i2s/snapclient-i2s.ino
index 6125ec21b..56c5c7509 100644
--- a/examples/examples-communication/snapcast/snapclient-i2s/snapclient-i2s.h
+++ b/examples/examples-communication/snapcast/snapclient-i2s/snapclient-i2s.ino
@@ -24,11 +24,14 @@
 
 OpusAudioDecoder opus;
 I2SStream out;
-SnapClient client(out, opus);
+WiFiClient wifi;
+SnapTimeSyncDynamic synch(172, 10); // optional configuratioin
+SnapClient client(wifi, out, opus);
 
 void setup() {
   Serial.begin(115200);
-  // login to wifi
+
+  // login to wifi -> Define values in SnapConfig.h or replace them here
   WiFi.begin(CONFIG_WIFI_SSID, CONFIG_WIFI_PASSWORD);
   Serial.print("Connecting to WiFi ..");
   while (WiFi.status() != WL_CONNECTED) {
@@ -42,13 +45,18 @@ void setup() {
 
   // setup I2S to define custom pins
   auto cfg = out.defaultConfig();
-  config.pin_bck = 14;
-  config.pin_ws = 15;
-  config.pin_data = 22;
+  cfg.pin_bck = 14;
+  cfg.pin_ws = 15;
+  cfg.pin_data = 22;
+  //cfg.buffer_size = 512;
+  //cfg.buffer_count = 6;
   out.begin(cfg);
 
+  // Define CONFIG_SNAPCAST_SERVER_HOST in SnapConfig.h or here
+  // client.setServerIP(IPAddress(192,168,1,38));
+
   // start snap client
-  client.begin();
+  client.begin(synch);
 }
 
 void loop() {
diff --git a/examples/examples-dsp/examples-mozzi/audio_input/audio_input.ino b/examples/examples-dsp/examples-mozzi/audio_input/audio_input.ino
index 00f8dddc1..06b579265 100644
--- a/examples/examples-dsp/examples-mozzi/audio_input/audio_input.ino
+++ b/examples/examples-dsp/examples-mozzi/audio_input/audio_input.ino
@@ -43,7 +43,7 @@ void setup() {
 
 void updateControl() {}
 
-int updateAudio() {
+mozzi_ns::AudioOutput updateAudio() {
   int asig = mozzi.getAudioInput();  // range 0-1023
   asig = asig - 512;                 // now range is -512 to 511
   // output range in STANDARD mode is -244 to 243,
diff --git a/examples/examples-dsp/examples-mozzi/control_gain-a2dp/control_gain-a2dp.ino b/examples/examples-dsp/examples-mozzi/control_gain-a2dp/control_gain-a2dp.ino
index 4c2b8ce79..788ab5c26 100644
--- a/examples/examples-dsp/examples-mozzi/control_gain-a2dp/control_gain-a2dp.ino
+++ b/examples/examples-dsp/examples-mozzi/control_gain-a2dp/control_gain-a2dp.ino
@@ -53,7 +53,7 @@ void updateControl() {
   gain = gain - 3;
 }
 
-int updateAudio() {
+mozzi_ns::AudioOutput updateAudio() {
   // shift back to STANDARD audio range, like /256 but faster
   return (aSin.next() * gain) >> 8;
 }
diff --git a/examples/examples-dsp/examples-mozzi/control_gain/control_gain.ino b/examples/examples-dsp/examples-mozzi/control_gain/control_gain.ino
index 99bef40c7..6d8cef90b 100644
--- a/examples/examples-dsp/examples-mozzi/control_gain/control_gain.ino
+++ b/examples/examples-dsp/examples-mozzi/control_gain/control_gain.ino
@@ -46,7 +46,7 @@ void updateControl() {
   gain = gain - 3;
 }
 
-int updateAudio() {
+mozzi_ns::AudioOutput updateAudio() {
   return (aSin.next() * gain) >>
          8;  // shift back to STANDARD audio range, like /256 but faster
 }
\ No newline at end of file
diff --git a/examples/examples-stream/streams-generator-merge-pwm/streams-generator-merge-pwm.ino b/examples/examples-stream/streams-generator-merge-pwm/streams-generator-merge-pwm.ino
index 59e2af42a..ea8362859 100644
--- a/examples/examples-stream/streams-generator-merge-pwm/streams-generator-merge-pwm.ino
+++ b/examples/examples-stream/streams-generator-merge-pwm/streams-generator-merge-pwm.ino
@@ -15,7 +15,7 @@ SineWaveGenerator<int16_t> sineWave2(32000); // subclass of SoundGenerator with
 GeneratedSoundStream<int16_t> sound2(sineWave2);  // Stream generated from sine wave
 InputMerge<int16_t> imerge;
 PWMAudioOutput pwm;   
-StreamCopy copier(pwm, merge);    // copy in to out
+StreamCopy copier(pwm, imerge);    // copy in to out
 
 
 void setup() {
diff --git a/examples/tests/etc/test-tdm/test-tdm.ino b/examples/tests/etc/test-tdm/test-tdm.ino
index 42a1d2fd1..04a67a7fb 100644
--- a/examples/tests/etc/test-tdm/test-tdm.ino
+++ b/examples/tests/etc/test-tdm/test-tdm.ino
@@ -12,7 +12,7 @@ InputMerge<int16_t> imerge;  // merge to 8 channels
 DriverPins dac_pins;
 AudioBoard board(AudioDriverCS42448, dac_pins);
 AudioBoardStream tdm(board); 
-StreamCopy copier(tdm, merge);
+StreamCopy copier(tdm, imerge);
 
 // we use the AudioBoard API to set up the pins for the DAC
 void setupDACPins() {
diff --git a/src/AudioCodecs/AudioEncoded.h b/src/AudioCodecs/AudioEncoded.h
index 67c936e75..845db33a0 100644
--- a/src/AudioCodecs/AudioEncoded.h
+++ b/src/AudioCodecs/AudioEncoded.h
@@ -382,6 +382,9 @@ class EncodedAudioStream : public ReformatBaseStream {
   void setLogLevel(AudioLogger::LogLevel level) { enc_out.setLogLevel(level); }
 #endif
 
+  /// defines the size of the decoded frame in bytes
+  void setFrameSize(int size) { enc_out.setFrameSize(size); }
+
  protected:
   EncodedAudioOutput enc_out;
 
diff --git a/src/AudioLibs/HLSStream.h b/src/AudioLibs/HLSStream.h
index 6db77cd52..c2ed194f2 100644
--- a/src/AudioLibs/HLSStream.h
+++ b/src/AudioLibs/HLSStream.h
@@ -104,7 +104,7 @@ class URLLoaderHLS : public URLLoaderHLSBase {
 #if USE_TASK
     LockGuard lock_guard{mutex};
 #endif
-    urls.push_back(str);
+    urls.push_back((const char*)str);
   }
 
   /// Provides the number of open urls which can be played. Refills them, when
@@ -255,7 +255,7 @@ class URLHistory {
     if (!found) {
       char *str = new char[url_str.length() + 1];
       memcpy(str, url, url_str.length() + 1);
-      history.push_back(str);
+      history.push_back((const char*)str);
       if (history.size() > 20) {
         delete (history[0]);
         history.pop_front();
diff --git a/src/AudioLibs/MozziStream.h b/src/AudioLibs/MozziStream.h
index ef0f03ab1..ae0a8f05d 100644
--- a/src/AudioLibs/MozziStream.h
+++ b/src/AudioLibs/MozziStream.h
@@ -1,10 +1,13 @@
 
-#include <MozziGuts.h>
 
 #include "AudioTools.h"
 
+namespace mozzi_ns {
+#include <Mozzi.h>
+}
+
 void updateControl();
-int updateAudio();
+mozzi_ns::AudioOutput updateAudio();
 
 namespace audio_tools {
 
@@ -142,7 +145,7 @@ class MozziStream : public AudioStream, public VolumeSupport {
     }
 
     // updateAudio() STANDARD mode is between -244 and 243 inclusive
-    int result = updateAudio() * cfg.output_volume;
+    auto result = updateAudio() * cfg.output_volume;
     // clip result
     if (result > 32767) result = 32767;
     if (result < -32768) result = -32768;
diff --git a/src/AudioTools/BaseStream.h b/src/AudioTools/BaseStream.h
index 0f4713ecf..5e3391a14 100644
--- a/src/AudioTools/BaseStream.h
+++ b/src/AudioTools/BaseStream.h
@@ -563,13 +563,13 @@ public:
       SmoothTransition<T> clean_start(channels, true, false, factor);
       auto first = *list().begin();   
       if (first!=nullptr){ 
-        clean_start.convert(first->data,first->len);
+        clean_start.convert(&(first->data[0]),first->len);
       }
 
       SmoothTransition<T> clean_end(channels, false, true, factor);
       auto last = * (--(list().end()));
       if (last!=nullptr){
-        clean_end.convert(last->data,last->len);  
+        clean_end.convert(&(last->data[0]),last->len);  
       }  
   }
 
diff --git a/src/Communication/UDPStream.h b/src/Communication/UDPStream.h
index 6a003fe32..1cafc417f 100644
--- a/src/Communication/UDPStream.h
+++ b/src/Communication/UDPStream.h
@@ -109,9 +109,9 @@ public:
   /// Reads bytes using WiFi::readBytes
   size_t readBytes(uint8_t *data, size_t len) override {
     TRACED();
-    size_t len = available();
+    size_t avail = available();
     size_t bytes_read = 0;
-    if (len > 0) {
+    if (avail > 0) {
       // get the data now
       bytes_read = p_udp->readBytes((uint8_t *)data, len);
     }