well i’m neither using a soundbridge nor windows xp with firefly, but this looks like a database error as it says in the logfile. which version of firefly do you use?
try the svn-1586 from the nightlies, thats the one a friend of mine is using, and he is impressed of the stability.
Before up-/downgrading firefly try to delete the songs3.db in the firefly installation folder.
maybe this works.
Greetz
Osik