I heard one song they did from the Number Of The Beast album, and it was Children Of The Damned, not a bad cover have to say, here's master of puppets they did when they were doing the entire Master Of Puppets album.
http://www.youtube.com/watch?v=CAfgRb3X0NE
As for the albums, ya can get them off their own label YtseJam Records, here.
http://www.ytsejamrecords.com/default.asp