No, enabling HW sound didn't do much for me. I'm running on a Hercules GTXP. It's hard to go into detail, but often times sounds don't play properly; explosions near my positions aren't heard, or are only heard in one ear on my headphones, half the rounds fired from a machine gun are muted, and so on.
The problem probably stems from the earlier problems with SB Live cards. From what the gfaqs people are guessing, the devs managed to b0rk non-soundblaster card support somehow; very few Live owners are complaining about sound issues.
Who knows. It's a great game, but tough to play when you can't hear shells landing near you.
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