I was right about the PS2...
"Electronic Arts announced today that both Sled Storm 2 and Westwood's Pirates: The Legend of Black Kat would utilize Digital Theater Systems (DTS). As you may recall, EA previously announced their partnership with DTS allowing them to produce games featuring the 5.1 channel surrond sound. At this point, only SSX: Tricky and NHL 2002 used the technology
To be able to take advantage of this technology, a 5.1 speaker setup and a DTS receiver/decoder are required. DTS technology allows movies (and now games) to be heard in six discreet channels--left, right, center, left rear, right rear, and subwoofer. Also, unlike previous PS2 titles that used DTS, EA's lineup of DTS-enabled games will constantly stream the surround sound signal during gameplay, not just during cutscenes."
Now the problem with this is that the CPU is taking a BIG hit which would normally be used for other processing. I find it silly that EA would even waste their time trying to make it work. Maybe they did it for all the free publicity. Now, if you'll excuse me, I must wash myself after visiting that website.