Carol, here's a site with an good (if short) list of recordings of Asian free-reed instruments. And here's another with some cool photos/info/sound clips.

Although it's probably not for everyone, I highly recommend "The Music of the Hmong People of Laos" (can be found on the list linked above), which features the Hmong version of the kaen. A great instrument to see played live, as the player dances, even does somersaults, while playing. The sound is the part that isn't for everyone. :)

---Lepus Rex