viewing AVI files...

Actually the best Movie player I've ever used for Linux is MPlayer.

    http://www.mplayerhq.hu/ 

    The latest release can play DiVX, MPEG-1\2, Quicktime (some, and many
file formats including everything Windows Media can. But you might want
to grab the CVS for the most features. Latest CVS compiled fine for me.

--codie(zach)