I’m going to see David Grisman tonight. So for grins I checked into his website. http://www.acousticdisc.com/dgq_splash.html
When I clicked on the Dawg Tracks page, I was pleasantly surprised to find 100 full length tunes. These weren’t snippets, and no downloads are required *(I have encountered problems trying to use RealPlayer and download MP3s at work.) * All totally free! (I guess he must be doing all right off those Garcia tapes!) 
Wondering if any of you might know of other similar pages on-line - of any musical styles - so I can expand my musical horizons while on the dime.