The mention of that now-infamous track on TPM's soundtrack in the "Qui-Gon's Death" thread got me curious; What other track titles ridiculously gave away key plot points? So I pulled out my soundtracks and compiled this list:

TPM
DISC 1
13. Qui-Gon and Obi-Wan Rescue the Queen
33. Anakin Defeats Sebulba
34. Hail to the Winner, Anakin Skywalker
DISC 2
27. The Death of Qui-Gon and the Surrender of the Gungans
28. The Tide Turns - The Death of Darth Maul
30. The Funeral of Qui-Gon

AotC
(None yet, but if they ever release an Ultimate Edition Soundtrack I'm sure there'll be plenty.)

ANH
DISC 1
9. Burning Homestead
DISC 2
9. Ben Kenobi's Death / Tie Fighter Attack

ESB
DISC 2
7. Betrayal At Bespin

ROTJ
DISC1
5. Han Solo Returns
8. The Emperor Arrives / The Death Of Yoda / Obi-Wan's Revelation

DISC 2
3. Brother And Sister / Father And SonThe Fleet Enters Hyperspace / Heroic Ewok
7. The Battle Of Endor II (Leia Is Wounded - The Duel Begins / Overtaking The Bunker / The Dark Side Beckons / The Emperor's Death
8. The Battle Of Endor III (Superstructure Chase / Darth Vader's Death / The Main Reactor)