These soundtracks all contain music tracks that were already released in some form or other. Singles typically have 1-6 tracks on them, a few of which may be original. Mixes are full CD collections containing music released in previous soundtracks.
Final Fantasy IV Minimum Album
Released: 1991
A single containing 6 arranged and unreleased tracks from FF4.
Final Fantasy V: 5 + 1
Released: 1992
A single containing 6 tracks; the first 5 are from the FF5 OSV; the last one appeared on the FF Mix album.
Final Fantasy V: Mambo de Chocobo
Released: 1993
A single containing 6 tracks: "Mambo de Chocobo" from FF5, and 4 original tracks.
Final Fantasy: 1987-1994 (Buy it!)
Released: November 1994
16 tracks from the first six FF's, ranging from original sound to Japanese vocals to piano tracks, including many unreleased tracks.
Final Fantasy VI Stars: Vol. 1
Released: 1994
A single containing 5 character themes from the FF6 soundtrack.
Final Fantasy VI Stars: Vol. 2
Released: 1994
A single containing 5 character themes from the FF6 soundtrack.
Final Fantasy VI Special Tracks
Released: December 1994
A single containing 6 original and arranged tracks based on the music of FF6. One of the tracks has Japanese vocals.
Final Fantasy VII Reunion Tracks (Buy it!)
Released: November 1997
19 tracks from FF7 plus one hidden track; rewind past the start of the CD to get to it. Three of the regular tracks, plus the hidden track, are orchestrations.
Final Fantasy Anthology CD
Released: 1999
22 tracks from FF5 and 6. This CD was bundled with the North American release of FF Anthology.
Final Fantasy VIII Promo CD
Released: 1999
11 tracks, thought actually contains only 5 songs from Final Fantasy VIII.
Eyes On Me (Buy it!)
Released: February 1999
3 tracks. One of which is Faye Wong's own song.
Best of Final Fantasy 1994-1999
Released: September 2000
11 tracks redone in electronica from FF6, 7, and 8.
Melodies of Life
Released: August 2000
4 tracks from FF9 sung by Emiko Shiratori. A promotional CD.
Final Fantasy IX: Melodies of Life (Buy it!)
Released: September 2000
The vocal single from FF9 sung by Emiko Shiratori; Japanese and English versions, instrumental version, plus a bonus song, "Galway".
Final Fantasy IX: Uematsu's Best Selection
Released: November 2000
33 tracks from FF9, including one never-before-released track. The English version of Melodies of Life is also included.
Final Fantasy VIII Music Collections
Released: January 2001
6 tracks from the Original Soundtrack, FITHOS LUSEC WECOS VINOSEC, and Piano Collections.
Potion: Relaxing With Final Fantasy (Buy it!)
Released: February 2001
17 tracks from compilations throughout FF history, all with a "relaxed" theme.
Final Fantasy X Promo CD
Released: 2001
3 tracks of music from the demo version of Final Fantasy X.
Suteki Da Ne (Isn't It Wonderful?) (Buy it!)
Released: July 2001
4 tracks: The vocal track from FFX, an instrumental version of it, and two bonus tracks, including a vocal remake of Aeris's Theme from FF7.
Spirit Dreams Inside
Released: September 2001
2 tracks: the English and Japanese versions of this song from FF: The Spirits Within by L'arc en Ciel.
The Dream Within
Released: September 2001
2 tracks, sung by Lara Fabian. One of which is 'The Dream Within', the ending song to the FF:TSW movie.
Final Fantasy: N Generation
Released: October 2001
A compilation by TokyoPop of 16 tracks from the NES and SNES Final Fantasies.
Final Fantasy: S Generation
Released: October 2001
A compilation by TokyoPop of 16 tracks from the PlayStation Final Fantasies.
VIVID
Released: November 2001
Two tracks from the FF Unlimited anime, including the first ending song.
Potion 2: Relaxin' With Final Fantasy (Buy it!)
Released: December 2001
13 tracks (plus one bonus track) of relaxing FF music, from previously released soundtracks and vocal albums.
Over The Fantasy (Buy it!)
Released: December 2001
6 tracks, all remixes of the intro song from FF Unlimited.
Final Fantasy X: Official Soundtrack (Uematsu's Best Selection)
Released: 2002
17 tracks from FFX, all also released on the main FFX soundtrack.
Romancing Train
Released: February 2002
6 tracks from the FF: Unlimited anime, including four versions of the Romancing Train ending song, and two versions of Promised Land.
White Flower
Released: November 2002
4 tracks based around the song "White Flower", from a commercial for FF Tactics Advanced.
Final Fantasy Tactics Advance Radio Edition vol. 1
Released: February 2003
5 tracks of audio drama, based on the story of Final Fantasy Tactics Advance. Volume 1.
Final Fantasy Tactics Advance Radio Edition vol. 2
Released: March 2003
4 tracks of audio drama, based on the story of Final Fantasy Tactics Advance. Volume 2.
Final Fantasy Tactics Advance Radio Edition vol. 3
Released: April 2003
4 tracks of audio drama, based on the story of Final Fantasy Tactics Advance. Volume 3.
Final Fantasy Tactics Advance Radio Edition vol. 4
Released: May 2003
5 tracks of audio drama, based on the story of Final Fantasy Tactics Advance. Volume 4.
real Emotion
Released: March 2003
4 tracks based around the vocal songs of FFX-2.
Kaze no Ne
Released: July 2003
Contains the intro theme to Crystal Chronicles.
Come With Me
Released: August 2003
6 tracks, Kumi Koda's (the Japanese version singer's) take on the English version of the vocal songs.
Redemption
Released: January 2006
Contains Ending theme and insert songs from FFVII: Dirge of Cerberus performed by Gackt. There is a limited edition in a DVD case that contains a DVD (region 2) of 2 music videos (one rock version, one Dirge of Cerberus version).
Kiss Me Goodbye
Released: March 2006
Contains four tracks, including the insert song "Kiss Me Goodbye" from FF12 performed by Angela Aki. Limited Edition includes a DVD (region 2) of the "Kiss Me Goodbye" music video and some sort of sticker.