After thinking about it, I remembered this website
LnC Episode Audio Files with the audio files from each episode. The only thing is it's not just music, but the actual audio track from the show, with sounds of movement and dialogue. I'm not a sound tech, but I think there is software out there that will separate the tracks into dialogue, sounds, and music.
Too bad they didn't put more of the music on the soundtrack, because not only did it add to the action onscreen (like the end of PML when Cat is asking "What spray" and everyone fidgets a little-the saxaphone playing in the background gives a sexy feel, fitting for Cat), but I would love to have it in my personal collection of music. Sorry, I wish I could be of more help!