Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
mad jew said:
I thought they all did the same thing. Should I get all three because there are still a few movies giving me grief.


They are different formats (don't know the exact differences though) but the 3ivx app should support all three of them at the moment.

Also, following link might be a nice supplement to movies that won't play sound. Works great for me 🙂

http://www.insaneness.com/ac3/AC3CodecMacOSX.sit
 
The few .avi files that will not play on Quicktime 7 will generally play using either MPlayer or VLC.
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.