Just a few free albums available online listed below.
Danger Doom - Occult Hymn EP
(Art + Video + 7 tracks) available here. Highly Recommended!
The Mirsa Record label ( Great Lake Swimmers, Phosphorescent, Centro-Matic, Flotation Toy Warning, Shearwater to name a few) Available here.
Anti Records Sampler
Also on emusic, a free label sampler with artists such as Neko Case, Jolie Holland, and Tom Waits. Available here.