*Thinking* Hmmm.... I wonder if VGMTrans would work on a usflib. I will have to put that on my to-do list.
--EDIT--
Nope, it isn't as smart as I hoped it would be. :)
edited 9:17 AM EDT October 21, 2006
by unknownfile at 12:57 PM EDT on October 21, 2006
USFLibs don't work since they use an algorithm to compress the data around the ROM. You could try unpacking that, though I don't know if that would work.