I received a 2 CD boot ages ago from someone here of Acoustic Cafe radio program celebrating the South By Southwest festival in Austin.
I edited the long tracks to get just Patty singing "Silver Bell" live (with the radio announcer's intro). Not sure what year this was?? Pattybase lists a 3-song appearance from 1996, but my boot seems like some special compilation to celebrate SXSW since it features many artists/ songs. (The disc itself is identified as "Acoustic Cafe show #218.)
You can listen via the link or download and add to your iPod.