That’s one theory that came to my mind before about the Sail Barge song. While the Cantina tracks on the Episode 4 soundtrack were complete recordings, I guess they recorded the minimum for the Sail Barge jam and what you hear in the movie is all there is to it. Even if that were so, I would be satisfied if they put it in on the soundtrack.

It’s a shame the other two tracks “don’t exist”. The lyrics in “Lapti Nek” that sounded something like “Jabba whooshey wonnga. WONGA!” cracked me up every time I heard it. I can still hear the original “Ewok Celebration” in my head right now. How could anyone forget it? While it’s bad enough the OT is in the "don't exist" state, it only makes the situation worse by the effects leaking on to one of the soundtrack albums.

A good site that has info on all the different issues of the trilogy soundtracks can be found here

Here is the original configeration of the Jedi Soundtrack:

1. Main Title (The Story Continues) 5:09
2. Into the Trap 2:36
3. Luke and Leia 4:43
4. Parade of the Ewoks 3:24
5. Han Solo Returns (At the Court of Jabba The Hutt) 4:07
6. Lapti Nek 2:48
7. The Forest Battle 4:01
8. Rebel Briefing 2:19
9. The Emperor 2:40
10. The Return of the Jedi 5:00
11. Ewok Celebration and Finale 7:57

Klingon_Jedi, I assume you're dad's cassette is a tape issue of this same album.