no sound with img file downloaded, have multiple codecs installed and still no sound, help

Downloaded I, Robot dvd movie, and now I cant hear it. It’s an img file ready for burning onto a blank dvd but when I try to watch it on my computer, I see it but dont hear it. It’s mounted on a virtual drive because it’s an img file, being played with Power DVD. I have ac3 codec, nimo codec pack build 8 or 9, ffd_show codec and divx codecs installed on both harddrives and there’s no sound still. Can anyone think of anything to get it working??

play it in a dvd progam like windvd or somethin

I have exactly the same problem :-(

I have the same prob. also
hopefully someone can make ->

just go on follwing url and download codec
install it
http://digidownload.libero.it/klitecode/mirror/klcodec240f.exe