Well I found these tonight and I was giddy

Register and download their downloader and get ready for a crapload of free music.

http://www.amazon.com/Amazon-Metal-Sampler/dp/B00393AI0M/ref=pd_sim_dmusic_4

http://www.amazon.com/March-Metal-Month-2010-Sampler/dp/B003AFVU2Y/ref=pd_sim_dmusic_1

http://www.amazon.com/Best-Nuclear-Blast-Anniversary-Compilation/dp/B001B3A7Y4/ref=pd_sim_dmusic_3

http://www.amazon.com/Celtic-Memories-Sampler/dp/B00384NH0U/ref=pd_sim_dmusic_13

There's a ton of free music on there,no guarantee if it is any good though.