Audio Play CHOP playback speed parameter

This CHOP is such a gem - the fact the audio lives in its own thread is extremely handy along with feeding it a Table DAT for a folder of sounds.

It’d be really nice if the playback speed could be changed for a given sample. This way, a sound effect that is getting spammed could have subtle pitch and timing variations without needing to bake separate sample files.

Even if this was exposed as an argument to the play() method in the class it would be enough.