Microsoft rarely installs proper drivers for motherboards, video and sound cards. It's a common oversight when owners reinstall this OS.
I just reformatted my computer and loaded windows xp as well as my applications. Everything seems to work (applications, internet access, etc.)
I downloaded itunes 6.05 onto my computer. When I open itunes on my desktop, all my music is showing in the itunes library.
The problem is that when I attempt to play my music there is no sound. In addition the song counter at the top does not move inspite of the fact the speaker icon appears on the left of the song.
I have unistalled and reinstalled itunes many times with no solution.