I still have Sal's files that he extracted.
(I'm still looking for a way to host them at the site.)
While there's several unused tracks that weren't used in the game.
The vocal theme of the Handsome Man song wasn't there at all.
(Unless you count the scene when you hear that song in the game.)

UNUSED SONGS

1st staff roll - Genre: Jazz
http://killer7.3dactionplanet.gamespy.com/SAL1STstaffroll.mp3
This is the original credits song that was used,before it got replaced with the song that you hear during the Linda Vermilion cutscene.

Road to horkin - Genre: Hip hop/Club
http://killer7.3dactionplanet.gamespy.com/SALroadtohorkin.mp3
I have no idea what this song was for.
I don't even recall a place called Horkin ever being mentioned in the game.
Pimping track though.

Title - Genre: Industrial/Techno Electronica
http://killer7.3dactionplanet.gamespy.com/SALTitle.mp3
The theme song for the Killer 7 intro.
Obviously this song wasn't used in the game,becuase it didn't even have an intro.
Sad shame too, coz this song kicks ass.

Free move - Genre: Electronica/Techno/Funk
http://killer7.3dactionplanet.gamespy.com/SALfreemove.mp3
This song was used in the game, but it wasn't in the soundtrack.
The upbeat song that you hear at Union Hotel.

While I'm at it. Here's two Silver Case mp3's that I made.

Sousa - Genre: Electronica/Rap
http://killer7.3dactionplanet.gamespy.com/SC-SOUSA.mp3
This is the song you hear every time a plot twist ocurrs or something urgent happens. Like most of Silver Case ost. The song is redundant like a rap cut, but at least the beat is addictive.

Tokio Morishima's theme - Genre: Electronica ?/Pop
http://killer7.3dactionplanet.gamespy.com/SC-TokioMorishima.mp3

Tokio's theme song.
He's the main character for the side story of the game.
(The Placebo Reports)
This is the original mix.
There's four other versions of this song.
One of them is a slower R&B beat that only plays during night time.

His song reminds me of Maya Amano's theme from Persona 2 Eternal Punishment.