just wondering? How do you expect someone to reasonably help you with the amount of information you have provided?
My apologies, I downloaded the files and the I have had avi files work before. For some reason these won't. If I could have some input it would be appreciated.
avi is just a video container. You have to have the correct codec to "decode" the video. The odds are: you will have to re-encode your "avi" file with a codec (with the correct setting) that is compatible with the xbox360.