Ha hahaha So what type of player do you have. U haven't told us anything except u can't play avi. avi is the standard for windows so I'm surprised you can't play it. Or do U use mac or Unix or Other? How R we supposed to help if U don't tell us nort. When ALL variables R unknown, perhaps a simple & quick answer is to use
VLC (click link - it's a free app) & it will play most but not all things. Alternatively, U can get a hold of an
AVI specific app (click link) to play the avi's.