The only material of theres that i've heard of on cd was i once heard there 1st album THE WALLS OF JERICHO and the 2nd album THE KEEPER OF THE SEVENTH KEYS (each once only) and the album called PINK BUBBLES GO APE which was quite good i thought back in the mid-1990s.
Also i did buy a RAINBOW tribute cd from the mid-1990s featuring this lot doing a load of RAINBOW covers which was ok although i remember that i didn't like a couple of the choices that they put on the cd two of them being I SURRENDER and maybe SPOTLIGHT KID cos i though that instead of covering those two tracks they should have covered some more 'Dio era' numbers instead, a small point only i know.