+void *S_LockBuffer(void);
+void S_UnlockBuffer(void);
+
+// add some data to the tail of the rawsamples queue
+void S_RawSamples_Enqueue(short *samples, unsigned int length);
+// read and remove some data from the head of the rawsamples queue
+void S_RawSamples_Dequeue(int *samples, unsigned int length);
+// empty the rawsamples queue
+void S_RawSamples_ClearQueue(void);
+// returns how much more data the queue wants, or 0 if it is already full enough
+int S_RawSamples_QueueWantsMore(void);
+
+// resamples one sound buffer into another, while changing the length
+void S_ResampleBuffer16Stereo(short *input, int inputlength, short *output, int outputlength);
+
+// returns the rate that the rawsamples system is running at
+int S_RawSamples_SampleRate(void);
+