No audio when playing ISO with Daemon Tools

[Miskatonic]

I have just recently had to re-install WinXP on a new hard drive. On my old install/hard drive Daemon Tools would play the files fine, but now they will only play the video and there is no audio.

Am I missing a codec or something like that? The only codec pack I have installed thus far is Codecs6027_allin_1[www.free-codecs.com]. I have installed Windows media player 10.

Thanks