ok so/so news.

The only 680nothing machines i can get to play AIFF's is the Macintosh Portable and Macintosh PowerBook 100

I am thinking its because of the hardware allows it.

I am going to do some more testing to see how far i can push it before it skips.

right now all i have is 10 and 22Khz mono, I am going to try stereo next