diff --git a/nx/include/switch/services/audout.h b/nx/include/switch/services/audout.h
index 952f1d2f..12f4476f 100644
--- a/nx/include/switch/services/audout.h
+++ b/nx/include/switch/services/audout.h
@@ -23,7 +23,7 @@ typedef enum {
     AudioOutState_Stopped = 1,
 } AudioOutState;
 
-/// audio output buffer format
+/// Audio output buffer format
 typedef struct AudioOutBuffer AudioOutBuffer;
 
 struct AudioOutBuffer
@@ -48,6 +48,16 @@ Result audoutRegisterBufferEvent(Handle *BufferEvent);
 Result audoutGetReleasedAudioOutBuffer(AudioOutBuffer *Buffer, u32 *ReleasedBuffersCount);
 Result audoutContainsAudioOutBuffer(AudioOutBuffer *Buffer, bool *ContainsBuffer);
 
+/**
+ * @brief Submits an audio sample data buffer for playing.
+ * @param event Handle obtained from audoutRegisterBufferEvent.
+ * @param source AudioOutBuffer containing the source sample data to be played.
+ * @param released AudioOutBuffer to receive the last played buffer.
+ * @param duration Playback duration in ticks.
+ * @return Whether a timeout occurred while waiting for data to be played.
+ */
+bool audoutPlayBuffer(Handle *event, AudioOutBuffer *source, AudioOutBuffer *released, u64 duration);
+
 /// These return the state associated with the currently active audio output device.
 u32 audoutGetSampleRate(void);
 u32 audoutGetChannelCount(void);