MP3 --> Ogg Vorbis

I know this isn't networking related, but I know there are a lot of linux guru's hanging around here.

I have a library of about 100GB of MP3's that I would like to convert to Ogg Vorbis. However, I don't know of any software specifically designed for this job. Does anybody know of any? I tried googling it but just came up with a bunch of windoze shareware crap.

Anybody know of any good linux apps that might help?

Thanks!

I will warn you, converting from one lossy format to another degenerates quality considerably. Many will not recommend this idea, even the vorgis FAQ. But if you still plan on doing it, here is a handy perl script that would do the trick. I'm sure there are better methods of doing it but they may not be as straightforward.