Milliseconds for the fade-in effect to complete.
-1 loops will play forever. 0 plays once.
-1 loops will choose the first free unreserved channel.
Maximum milliseconds to play this sound. If not enough loops or the sample chunk is not long enough, then the sample may stop before this timeout occurs. -1 means play forever.
the channel the sample is played on. On any errors, -1 is returned.
Plays this sound in the selected channel with a fade in effect.