its not playing the songs its that it wont let me rip a disc i've created. but when i try a friends disc that he has bought rips fine and to my knowledge albums bought from a shop the format of the audio files are m4a
Audio CD are held in a format that windows displays as CDA.
M4A (as used by itunes and other apps) is a compressed audio format that includes DRM information. I don't know about the 360 ability to play m4a It is posible that the disc you created contained DRM protected files ?