CDBaby doesn't offer a way to search for these free download goodies so I used Google's SITE: modifier like this: site:www.cdbaby.com "download $0.00". The results were quite good and one of the first things that showed up in the search results was this excellent fingerstyle Guitar album by Roger Hudson.
|Roger Hudson - Delta|
I am quite a fan of acoustic fingerstyle guitar and know most of the practitioners from John Fahey on but Roger Hudson is a new name for me.
I will continue to review the search results for more audio gems.
Update: To further refine your search you can append a keyword such as "Classical" or "Jazz" for instance to the original search. I used the keyword "ECM" and turned up two very nice jazz albums for free download. site:www.cdbaby.com "download $0.00" ECM