Pool hall blues orginal music

If you have a Netflix or hulu account, they play the episodes with the original music. However, Netflix doesn't have all the episodes available. Hulu has all, or almost all of them, available. However, they have commercials. And they recently made "Disco Inferno" unavailable, which is stupid. Why are some episodes available and some not? That is ridiculous to me. As far as I know that is the only one hulu doesn't have. Also, although it's been awhile since I've heard any more about it, it was my understanding only the DVD releases in the U.S. (region 1) has problems with the music being from the original soundtrack. The DVDs from region 2, from the UK, should have the music at least mostly intact.

Hope that helps.