Here are the most common suffixes you'll come accross with a description of their file type.

.zip , .exe = Windows application

.sit , .dmg , .img = Mac application

.mov = Quicktime video file (any platform with QT or QT codec installed)

.mpg = video file (any OS with video player and .mpg codec)

.wmv .asf = WindowsMedia Player video file (any OS with WMP or WMP codec)

.mp3=audio file (any OS with mp3 player)

.ram = Real Player video file (any OS with RP or RP codec installed)

.jpg=Photo (any OS with picture viewer)

.txt= text file (any OS with text viewer)


Limewire does have filters which allow you to distinguish between apps , videos, pics or audio (the radio buttons in the bottom left part of the search window) but it doesn't separate apps by OS, so you'll have to go by the suffixes.