Yeah, I know that it needs the lib, but I don't really see a reason why.

A little C code for parsing the Ogg tags is no big thing, and Ogg tags are not such a mess like ID3.
There's plenty of free C code for Ogg tag parsing around, I think.
This could help Canola with Ogg on Diablo since getting ogg-support on Diablo is such a problem.
It would also make the LMS smaller in size and more performant on Oggs.

Just my 2 ¢.