There are many sources of legal free music that you can take advantage of to expand your musical canvas. Here's an updated representative list:
* hearitfirst.com
* iTickets.com
* artist pages on social sites such as purevolume.com, MySpace.com
* Gospelmusicchannel.com
* iTunes (new each Tuesday)
* Amazon.com (new each Tuesday)
* Walmart.com (new each Tuesday)
* Jesusfreakhideout.com
* 20 The Countdown Magazine
* Tangle
This site seeks them out for you:
Free Christian Music blog
This site has a nice list.