Name
HaveFreeChannel -- check if a free channel is available (V6.1)
Synopsis
n = HaveFreeChannel()
Function
This function checks if there is a free channel for audio output. If there is, HaveFreeChannel() will return the index of this channel, otherwise 0 is returned.

Inputs
none

Results
n
index of free channel or 0 if all channels are currently occupied

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