Music Bakery has some nice stuff, but there are too many people using them now. I have a couple of their collections on CD, but there are a lot of the nicer tracks I won't use because I already hear them everywhere. There is some good original music out there if you dig for it, but you usually will have to pay $30 bucks a track for royalty-free usage. Anything cheaper is typically cheesy stuff that would be embarrassing to have on a video.
Freeplay has some grade-A quality tracks, but if you want to use them on a DVD, you'll pay as much for it as you would for stock video, maybe even more. They charged 50 bucks for a one year license to two tracks on a video I produced for my family, with no distribution rights beyond my blog. I'm not complaining, as they're doing what I'd do - but my point being that they're not a cheap solution.