Playing M4P's

OrangeCD seems to scan my iTunes media files fine....and it even adds the "Play / Queue" feature under each song. But, when I try and play a song it comes up with Windows Media Player. Of course, that doesn't play m4p's. I assume I have to have iTunes pop up?
How?
Also, is it possible to have a different player pop up for different file extensions? I'm not sure iTunes can play wma files (I guess I've never tried).

Okay, I'll post my own reply.......
I figured out how to have iTunes play the M4P songs. Unfortunately, it does not play wma songs. Therefore, it really would be nice to link specific players to file extensions.
OrangeCD already puts an .ini file in the song folders. Why not have an entry in the .ini file that determines the player that should pop up to play those particular files? :D