i using x-fi platium for movies, and i want to buy x-fi titatium HD for audio. but i don't know when i use them together on PC, software and driver can recognize them and work correctly ( i know i juz use 1 of them at 1 time)
...Its possible, but I wouldn't bother. In theory, you can have both installed, both would be recognized as seperate devices, and since both use the same driver, you should be able to switch between them via the Windows Control Panel. Whether it will work stably, thats another story...And again, why not just use one soundcard and connect everything to it?
Also, if you want a soundcard for audio/movies, you should probably take a look at ASUS; thats their area of expertiese.