Double K.O. / Double K.O. / Double K.O.

Disc 1 - Shoryuken Disk [Capcom]
Disc 2 - Orochi Disk [SNK]
Disc 3 - Keep Fighting EP [Misc.]

Sources:
Street Fighter II: 1.01, 1.03, 1.06~10
Super Street Fighter II: 1.04
Super Street Fighter II Turbo: 1.11
Street Fighter Alpha: 1.05
Marvel vs. Capcom: 1.15~16
Street Fighter IV: 1.12
Ultra Street Fighter IV: 1.13~14

SNK Neo Geo BIOS: 2.01
Fatal Fury: 2.14
Fatal Fury Special: 2.04, 2.13
Samurai Shodown: 2.10~11
The King of Fighters '96: 2.08~09
The King of Fighters '97: 2.05
The King of Fighters '99: 2.06~07
Garou: Mark of the Wolves: 2.12

Mortal Kombat: 3.01 (medley)
Soul Blade: 3.02
Killer Instinct: 3.03
Fighting Masters: 3.04 (medley)
Eternal Champions: 3.05
Teenage Mutant Ninja Turtles (cartoon): 3.06 (up to 1:15)
Teenage Mutant Ninja Turtles: Tournament Fighters (SNES): 3.06 (from 1:15 on)

Original Composers (sourced from original games/albums):
Yoko Shimomura: 1.01, 1.03, 1.06~10
Sacrifice: 1.02 (see below)
Syun Nishigaki: 1.04
Hideyuki Fukasawa: 1.12~14
Yuko Takehara, Masato Kouda: 1.15~16
Shinsekai Gakkyoku Zatsugidan: 2.01, 2.04~14
Tate Norio, Masahiko Hataya: 2.02
Dan Forden: 3.01
The Immortals: 3.01 (excerpts from "Techno Syndrome (Mortal Kombat)")
Benten-Maru: 3.02
Graeme Norgate: 3.03
Masaki Kase, Hiromitsu Shioya: 3.04
Chuck Lorre, Dennis C. Brown: 3.06 (Teenage Mutant Ninja Turtles theme, 0:00-1:15)
MegaDriver: 2.03

1.02 is an arrangement of "Street Fighter" by the Swedish band Sacrifice from their EP "Street Fighter" (1985). 2.03 is an original track with Portuguese lyrics by Allan "Big Thunder".

NOTE: Official track list contains spelling and grammar mistakes (e.g. "Pyscho Crusher"), as well as inaccuracies (e.g. the base music of "Mighty Hiryu" is said to be from Marvel vs. Capcom 2, but is really from Marvel vs. Capcom).