No, not beyond what the output setting is. Whatever it's configured to do in the control panel is what it's locked for.
No, it should not un-lock/re-lock constantly like this (that would be unpredictable and unsuitable for mixed content) - it will be locked as set by the driver CP, and perform SRC as needed to meet that target or to apply any processing/DSP/etc effects and so on. True "bit perfect" from a PC is not a perpetual output, and that's why I keep saying it's kind of a silly thing to lose sleep over. Set it once and forget it. Waiting for re-lock is annoying.
IIRC Audio Creation mode wants to target 24/48 or 24/44.1, but it's been a few months since I had an X-Fi installed. Again, it doesn't really matter if bit-depth is 16 or 24, and leaving it at 24 is going to be more compatible if you have 24-bit content. Same for fs to be quite honest, but worrying about minutiae seems to be par for the course.
Glad to hear it.
Edited by obobskivich - 8/8/12 at 1:09am