System Sound killed

[omgukk2]

For the past 2 days whenever i go ingame for the quake3 mod urban terror my system sound will mute itself randomly after about 5 -10 minutes. The only reason I am posting this in these forums is because it only happens when i have ts2 open. I tested it by playing other games and it's only this one. The only way to get my sound back after all this is to quit ts2, which takes about 15 seconds to quit.( normally about instantly) Just wanted to know if anyone ever had any related problems and what they did.

Sys Specs
ic7max3-use onboard sound
1 gb of 3200 ram
120gb hdd
9800pro

[omgukk2]

After playing some other games with ts2 running in the background, any game i play now loses it's sound. I use Realtek Ac97 sound drivers. I don't understand why this is happening and i need some help because i cannot play while on teamspeak. I've been using ts2 for as long as i can remember and i havent changed any of my settings to bring this error, it just happens randomly. I posted my specs and my driver is Realtek AC97 version 5.10.0.5580. PLEASE HELP *crys*