Here's what I can remember:
Empire -
Echo Base -
http://www.youtube.com/watch?v=9HkTOvmye-A
"Snowspeeders Take Flight" (All but the ending is replaced w/ "Hyperspace") -
http://www.youtube.com/watch?v=dzC4uIiFuHs&t=06m58s
"Aboard the Executor" (Beginning unused, middle replaced w/ "The Imperial March") -
http://www.youtube.com/watch?v=0-3GTFU2uCA&t=01m14s
"Luke's Nocturnal Visitor" (Ending cut short) -
http://www.youtube.com/watch?v=kMoIp_ecBNk&t=01m48s
"Mynock Cave" (Beginning unused) / "Training of a Jedi Knight" -
http://www.youtube.com/watch?v=JPdeyXjTY-s
The Duel Pt. 1 - http://www.youtube.com/watch?v=N5hfreJ4xp8
The Duel Pt. 2 - http://www.youtube.com/watch?v=ff9_Y4X1tBE
Jedi -
"Bounty for a Wookiee" (Beginning replaced w/ "Father and Son") -
http://www.youtube.com/watch?v=Ek2YLVnzgwQ
"Luke Confronts Jabba" (Middle replaced w/ "The Dark Side Beckons") -
http://www.youtube.com/watch?v=6C9ISCzfoAs
-"The Emperor Arrives" (Ending replaced w/ "The Emperor's Throne Room") / beginning of "The Death of Yoda" -
http://www.youtube.com/watch?v=VJB9O6YvbxM
-"Leia Is Wounded" (Beginning replaced w/ "Scout Walker Scramble") -
http://www.youtube.com/watch?v=IbAI1EPQH6M
"Obi-Wan's Revelation" -
http://www.youtube.com/watch?v=MFz8W7fYMy4
"Through the Flames" (Beginning replaced w/ "Hyperspace" from Empire) - http://www.youtube.com/watch?v=9FKx8HbATbk
Alternates for "Leia's News" and "Light of the Force" - http://www.youtube.com/watch?v=RLidns6SSMM
Sith -
"I Am the Senate" -