Got my XP333-R setup last night. Setup the SBLive with the native XP drivers and then installed Livewire 3 XP. No games installed yet. Same score 3DMark 2002SE (4500) before and after installing the soundcard. Captured 720x480 NTSC mpeg-2 IBP Frames 15MB/sec no dropped frames, audio in perfect sync. Moved 25GB AVI video capture file from my RAID array to my Main drive while listening to Winamp (Brother Cane) no crackles, no stuttering.
So far, no issues. The onboard sound was also easily disabled by setting a jumper.
<< Does the Magik1 have similar behavior with regards to the mouse? >>
I saw your post, I hadn't tried the DVD player yet so I threw "Police Academy" in (it was handy) and using ATI DVD 7.5, playback was smooth, and no issues with my mouse or stuttering, even while moving files during windowed playback.