This website is a great resource for musical recordings. They have playlists of music that can be sorted by type, artist, culture etc as well as lesson plans, podcasts and articles.
The Smithsonian provides a wealth of articles about music and culture from across the globe. Additionally, they have a database of detailed lesson plans to teach students at varying age levels about music from around the world. Everywhere from African Drumming to Indian classical music. Great resource!
Great resource for music listening activities in class. Contains information about different cultures and traditions, audio files, videos, podcasts, lesson plans etc.
This site offers links to many music files. There are many folk and ethnic songs as well as traditional ensemble music. Everything on this site is free.
Daria World Music for Children is a colorful and vibrant website that teaches students about all aspects of world music. It has many multimedia resources from listening to the sound of an instrument to actually learning how to make one. Definitely a great resource!