File Hosting- Free MP3 Uploads
Free MP3 File Web Hosting
They offer free mp3 audio hosting with an easy to manage upload system. Free user account and registration required, but it only takes 20 seconds to signup.
Once you've created the account you can upload, and manage your mp3 uploads.
It also automatically generates and Artist page for you. That page contains a embeded flash mp3 player. You can license tracks free via creative commons as well.
Vibecat has a quick web 2.0 interface, that you just have to experience 1st hand. Registration is FREE, and takes less than a minute.