Hi..I do not have this card but happened across the link just before seeing your post
It looked as though the poster thought the card did not work but found that it worked as root and then found a solution in permissions..I had thought the alsa drivers were installed which should include the sbl card..I am evidently mistaken somewhere...and very sorry...hopefully someone will shed light
it may be helpfull to know which soundblaster you have and what driver you downloaded.
here are some links that led me to believe the card is supported by vl and in gslapt if I type alsa in the search box it lists the driver as installed
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sound blaster cards supported
http://www.alsa-project.org/main/index.php/Matrix:Vendor-Creative_Labshttp://www.alsa-project.org/main/index.php/Main_Pagecheers