Read the FAQ on Artists and Albums.
To add a song you must first create an Artist/Band.
You must Create an Album.
You may add songs to an Album you have already made by browsing to your album and clicking the edit icon. (upper right)
You may add songs ... edit songs... delete songs
Song size is limited to 50mb .. per upload session.
1- 50mb song :) or 5-10mb songs (file size is subject to change after beta testing)
Mp3 and wav are supported currently.