I don't usually like to post shortblogs like this but I haven't seen Dale or someone post it on the frontpage yet and the world needs to know - the OneUps' new album, aptly titled Super Mario Kart Album is out now.
You can buy a combo physical-CD/download, or just download the tracks if you don't want the actual disc. And it's $10 (or more if you want - support!). All of the tracks are up for perusal too so you can try before you buy.
I'm not affiliated with these guys in any way - I just think they are the absolute best game music band on the scene today as far as musicianship, innovation, and technique, and they deserve as much success as we can throw at them.