I can see the movie but no sound at all

[patagonia]

I got a bunch of dvd from some friend with a lot of movies, I can see all of them but many of them I can't hear, my Promac keep telling me I am missing some software but no idea which one, shows something like this:

dmd-nt2-cd1.avi
dmd-nt2-cd1.srt.....need some software for this, ???????
dmd-nt2-cd2.avi
dmd-nt2-cd2.srt.....need somesoftware for this too, ????

I am new with mac and computers are not so easy for me , if someone got any idea about this and how I can solve this problem (with an easy language I can understand ) I will appreciate!!!!. thanks a lot.
sudexplorerchile@yahoo.es.
Patagonia.

 

[gr8bob]

Probably an AC-3 audio track. You'll need a QuickTime component that can handle AC-3 streams.

Try THIS

 

[winninganthem]

http://videolan.org

Get VLC, it can play pretty much any file you want it to perfectly.