Do you have a DELL Computer ?
The SB Live! Card has an EMU10k Chip.The SB Live! Value Card (usually DELL ships) has not the same chipset.
Since your Card is reported as EMU10Kx I am pretty sure that it's a vlaue card.
The "normal" SB Live is reported with EMU10K, without the X.
Unfortunately this card is on ALSA's Blacklist. So there isn't an ALSA driver for it.
There were some commercial OSS Drivers for that card for Linux, but after figuring
out how much the driver would cost, it would be cheaper for you to buy
a standard SB Live! Card. This card works very good.