I want to build an application, that deals with music. Don't want to get too specific, but a user will search for a song, and then they select it.
I looked at Favtape, but they have no API. iMeem doesn't allow off site media playing, so my question is, is there any online resource that has a vast selection of songs?
jamendo.com has a big collection of free and legal music for download and an API for developers.
The Internet Archive has a large collection of netlabels: assorted music released under a Creative Commons license. (In other words, it's generally ok to use it as long as you give credit to the artist.) Their open-source audio project is also notable, although you'll have to sift through the audiobooks and other non-music.
None of this is mainstream music, except (of course) for the Grateful Dead... not sure if this is a concern.
There is no API, but the Archive's interface is insanely simple: no Flash, no JavaScript. You could probably write your own song-retrieving process without much trouble.
...of course, this will scale like ass. If you have a small userbase, you might give it some thought.