[chrisss]

I currently use MSP's audio playback to link an mp3 to a song for learning.  I also use, separately, an audio speed control app to slow the song down while I'm learning it.  It'd be very handy to be able to slow it down in MSP's playback instead of having to go out to another app.  For my purposes I don't need infinitely vairiable speed.  Something like intervals of 10% would work fine.  Like 90%, 80%, 70%, etc.

I don't know if there's a library code segment out there that'd make this less work to implement.  Speaking for myself, I'd be happy to buy it as an add-on, to help fund the time+effort to make it possible.