Please visit the most amazing and wondrous source of International and Balkan music in the world, www.festival-records.net.
The owner, John Filcich, has always had personal familiarity and in depth knowledge of this subject matter.  If you need rare and hard-to-find old or new music, this is where you will find it.  Fortunately, John never sold the last copy of most records and books and now has pristine copies of even 78 rpm records nearly 100 years old.  Thanks to modern technology, these can be preserved for today's and posterity's enjoyment.  Already available is a two CD set with 40-page booklet of old Tamburitza music, songs, and dances, as well as a large variety of other CDs of Balkan and international folk dance music.

The following are also interesting sites:

www.Dancilla.com 
www.volkstanz.at
www.gstanzln.com
www.wienerlieder.at

www.caber-records.com  Description: Caber Records produces bagpipe music

and traditional Scottish folk music available for MP3 download.