docs: An audiocore.Mixer suffices where another audio source would

Author: jepler

shared-bindings/audiobusio/I2SOut.c

@@ -164,7 +164,7 @@ STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(audiobusio_i2sout___exit___obj, 4, 4,
 //|     Plays the sample once when loop=False and continuously when loop=True.
 //|     Does not block. Use `playing` to block.
 //|
-//|     Sample must be an `audioio.WaveFile` or `audioio.RawSample`.
+//|     Sample must be an `audiocore.WaveFile`, `audiocore.RawSample`, or `audiocore.Mixer`.
 //|
 //|     The sample itself should consist of 8 bit or 16 bit samples.
 //|

shared-bindings/audiocore/Mixer.c

@@ -152,7 +152,7 @@ STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(audioio_mixer___exit___obj, 4, 4, aud
 //|     Plays the sample once when loop=False and continuously when loop=True.
 //|     Does not block. Use `playing` to block.
 //|
-//|     Sample must be an `audioio.WaveFile`, `audioio.Mixer` or `audioio.RawSample`.
+//|     Sample must be an `audiocore.WaveFile`, `audiocore.RawSample`, or `audiocore.Mixer`.
 //|
 //|     The sample must match the Mixer's encoding settings given in the constructor.
 //|

shared-bindings/audioio/AudioOut.c

@@ -163,7 +163,7 @@ STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(audioio_audioout___exit___obj, 4, 4,
 //|     Plays the sample once when loop=False and continuously when loop=True.
 //|     Does not block. Use `playing` to block.
 //|
-//|     Sample must be an `audioio.WaveFile` or `audioio.RawSample`.
+//|     Sample must be an `audiocore.WaveFile`, `audiocore.RawSample`, or `audiocore.Mixer`.
 //|
 //|     The sample itself should consist of 16 bit samples. Microcontrollers with a lower output
 //|     resolution will use the highest order bits to output. For example, the SAMD21 has a 10 bit

shared-bindings/audiopwmio/AudioOut.c

@@ -166,7 +166,7 @@ STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(audiopwmio_audioout___exit___obj, 4,
 //|     Plays the sample once when loop=False and continuously when loop=True.
 //|     Does not block. Use `playing` to block.
 //|
-//|     Sample must be an `audiopwmio.WaveFile` or `audiopwmio.RawSample`.
+//|     Sample must be an `audiocore.WaveFile`, `audiocore.RawSample`, or `audiocore.Mixer`.
 //|
 //|     The sample itself should consist of 16 bit samples. Microcontrollers with a lower output
 //|     resolution will use the highest order bits to output. For example, the SAMD21 has a 10 bit