Hi, Phoenix - If you're looking for real, noncommercial folk songs, I think you'll find that this Google Search (click) will lead you to a number of online folk song recordings.

• The Max Hunter Collection is probably the most extensive.
  
• The Wolf Collection is another.
  
• Centennial Collection of Canadian Folk Songs looks interesting, too.
  
• The John and Ruby Lomax 1939 Southern States Recording Trip at the Library of Congress is excellent, and you will find other collections of recordings at the Library of Congress.

-Joe Offer-