I know about www.soundtrack.net/dvd but sadly that site does not list the details of the isolated score in it's channel format.

For example:
HOLLOW MAN Jerry Goldsmith Dolby Digital 3/2 (includes LFE)
GLORY James Horner Dolby Digital 3/1

x/y denotes
x number of active channels front (front, 2x stereo)
y number of active channels rear (1 denotes mono rear)

tnx....

I'd be happy to put that info into our database, but we don't have all the info - so it would be rather incomplete. Feel free to email me if you want to take on that task!!

I'd be most honored to supply you with the first batch of channel mix info. This is from my own personal collection, so bear with me

Alien (Alien Saga Edition)
Jerry Goldsmith
1
Dolby Digital 2/0
full isolated score without commentary and alternate isolated score

Bad Boys: Special Edition
Mark Mancina
?
?
?

Bicentennial Man
James Horner
2
Dolby Digital 3/2
full isolated score without commentary, includes source music

Cell, The
Howard Shore
1
Dolby Digital 3/2
full isolated score without commentary

Contact: Special Edition
Alan Silvestri
2
Dolby Digital 3/2
full isolated score without commentary

Dark Crystal, The
Trevor Jones
1
Dolby Digital 2/0
full isolated score without commentary, includes source music

Frequency
Michael Kamen
1
Dolby Digital 3/2
full isolated score with commentary in between

Glory
James Horner
2
Dolby Digital 3/1
full isolated score without commentary, includes source music

Hollow Man: Special Edition
Jerry Goldsmith
1
Dolby Digital 3/2
full isolated score with commentary in between and over beginning/end of some sequences

Matrix, The
Don Davis
1
Dolby Digital 2/0
full isolated score with commentary in between and over beginning/end of some sequences

Mummy, The: Collector's Edition
Jerry Goldsmith
1
Dolby Digital 3/2
full isolated score without commentary, includes source music (includes LFE channel)

Stuart Little: Special Edition
Alan Silvestri
1
Dolby Digital 3/2
full isolated score without commentary, includes source music (includes LFE channel)

Tomorrow Never Dies: Special Edition
David Arnold
1
Dolby Digital 2/0
full isolated score without commentary, includes some source music

Witches of Eastwick, The
John Williams
1
Dolby Digital 3/2
full isolated score without commentary, includes source music