I have this Problem with several steam games:
- Xcom Enemy Unknown
- All Zombies must die
- Borderlands
If I'm not mistaken, they all use the unreal engine 3.
- Sound works fine if steam is installed in a clean wineprefix.
- But I couldn't get sound working without the help of "winetricks steam" if my life depended on it.
I have several older wine prefixes where steam has already been installed for a while (one of those I'd love to use as my main steam prefix, but...

Can't find any potentially related error messages: there just does not seem to be any sound at all. Tried about anything you can do with dc & audio in multiple clean prefixes (removed pulseaudio to use alsa only... installed xact + extracted some files manually... tried an up to date full / original xd installer and I tried a lot of random "desperate" stuff found all over the net...), nothing got me sound in a steamless prefix. I guess this is not a wine bug, because the games potentially run fine - I just can't figure out how to make them run fine manually... so... any ideas on how to figure out what's wrong?
thx.