SOLUTION CAN BE FOUND BELOW THE ORIGINAL PROBLEM
I need help as I don't know what other options to pursue. My Steam games lack sound, but the problem isn't localized to just Steam though it seems to be the crux of the problem.
I'm running a 64-bit Kubuntu Karmic installation with a standard Wine installation (i.e., not Wine64). I installed Steam to its own wine prefix and the only winetricks I did were to install fonts.
When I load up Steam, sound dies. Exiting Steam solves this problem and I can hear sound again. This leaves me to believe this is a problem with my sound system but I do not know what could cause it. Do note that since I'm using Kubuntu Karmic, it does not have PulseAudio installed by default. I believe the sound system is ALSA still.
The act of starting up Steam causes the sound to die out. I can't hear YouTube videos or anything. I also have Guild Wars installed to a different wine prefix and it doesn't have any sound problems by itself or with other sources like YouTube.
Any help would be appreciated. Thanks!
Turns out it was a lack of a complete ALSA configuration. An update for my sound card's drivers were in a newer kernel than released, so it was backported by the Kubuntu package managers. You can install it with the following:
For good measure, you can also backport other things if you wish:
sudo apt-get install linux-backports-modules-alsa-karmic-generic
sudo apt-get install linux-backports-modules-karmic-generic linux-backports-modules-headers-karmic-generic