Utterly, utterly, fantastic!
This has got to be one of the coolest things around. I work in an office of about 100 people, and we used to listen to various crappy radio stations that either played the same "hits" every day, or "minority" stations that half the company hated. The only alternative was to plug in our headphones and never talk to anyone.
Then we discovered Tunez, and, wow! A spare PC, a 40Gb hard drive, and we actually *look forward* to the music in the office!
To say Tunez has revolutionised our lives... is not an exaggeration.
An open, cross-platform journaling program.
A scientific plotting package.