Red Ferret is a monster resource for free legal MP3s — it claims to indirectly link to one million tracks. Some of the resources have been mentioned here, but there are plenty of sites that are new to me, like GigaTracks.

Radio Plus features

free and legal mp3 downloads of songs that John Peel has featured on his Radio 1 show recently. All these tracks have been made available by the bands or record labels themselves, they don’t involve Kazaa or anonymous postings to alt.binaries.sounds or anything like that. The idea is that if you like the track, you’ll buy some of their records, which seems pretty sound to me.

Seems pretty sound to me as well, I call it fair podcasting.

I have played a few of these acts (Laura Cantrell, Noxagt, Mogwai) and have given Cornelius’s (matadorrecords) Point of View a four star rating for later inclusion on an Acecast. Marvin beat me to it though; Cornelius is on his playlist for Marvin Suicide’s show number 42.