I was positive that The Devils got a DVD release over here (the UK), but I've just checked Amazon and can't find anything. I remember they showed the 'complete' (i.e. uncensored) version on Channel 4 a few years ago and they also had this documentary with reminiscences from the actors. It's definitely got a following over here though, so I suspect that a proper DVD will only be a matter of time.

As far as The Music Lovers is concerned, I'm way impressed that anyone else has actually seen it! I think it's probably Russell's most successful music biopic (Mahler was tolerable, Lisztomania was not). I assume that MGM still own the rights to this film and just haven't gotten around to releasing it yet.

I am continually amazed by the films which have managed to fall through the cracks in the transition from video to DVD.