For now, the easiest way to browse your avi/divx/.. files is to 
customize the menu of VLC / QT Player / .. accordingly by dragging 
and dropping the root folder of all of your divx files into the 
Context Menu of Remote Buddy (Preferences > Behaviours > *Player of 
your choice* > Context Menu).

This way, you gain quick access to your files from within the players 
with the remote control.

You can also transition your movies into a VIDEO_TS folder structure:

My Movies /

Blockbuster Movie A / 
Cover.jpg 
VIDEO_TS/ 
BlockBusterMovieA_01.avi 
BlockBusterMovieA_02.avi

Blockbuster Movie B / 
AnyFileNameWillDo.jpg 
VIDEO_TS/ 
MovieB01.divx 
MovieB02.divx

and can then access them through the Movie Library with VLC (DVD 
Player will not play back most media).

Benefits: 
1) Covers attached to your movies. 
2) Well organized movie collection. 
3) Available now.

Downside: 
Needs some time to initially set up.

Best regards, 
Felix