Here is a site for Arabic music(from UCLA), which is about as far as you can get from bluegrass, but it is very interesting because they have examples of scales and rhythmic licks, each with a little play bar, so that you can play the thing over and over, and play along with it if you want to learn it--

This is about the best thing I ever saw for learning a lick, cause you have it all there with nothing extraneous to sort out--

(warning--it takes a while to download)Click here