Video
Game
Music

It's good, it has all of the tracks played in the missions in-game, but it isn't exactly THE OST, it's basically a rip of the game files, so there are missing tracks, like the Ending Credits Theme people are talking about. It's also duplicate, as the tracks that begin with "sounds ff-000etc" are just a repetition of the former, but unordered. Also "m02a cs" is bugged, the "4493" track of the other version is alright, though, so it could be swapped. "m13b" doesn't exist in-game, it's just a copy of "m13a," it was probably put there by mistake, so it just needs to be removed.

It would be cool to get an Official version of this soundtrack, or someone who can rip the files from the game could find the remaining tracks, if they exist as files in the game. Otherwise, I think there are tracks that just can't be found that way, as they appear in cinematics in-game. The cinematic for The Ant, for instance, has a music that's unique to it, and you can't find it on the tracks here.

Also, here goes a list of the tracks I made, naming them based on the missions they play in. Also, I think it's important to point out that many of these tracks are repetitions of one another, as they are basically edited versions of an original theme that's made in a manner to fit their respective mission or scene.

Numbered as they appear in-game, but ordered as they appear in this list:
01 Title Screen
02 Came a Hero!
05 Strange Visitors 1
04 Strange Visitors 1 Briefing
03 Strange Visitors 1 Cutscene
06 Strange Visitors 2
07 Skating on Thin Ice 1
09 Skating on Thin Ice 2
08 Skating on Thin Ice 2 Cutscene
11 Nuclear Winter 1
10 Nuclear Winter 1 Briefing
12 Nuclear Winter 2
13 Nuclear Winter 3
15 In the Nick of Time 1
14 In the Nick of Time 1 Cutscene
16 In the Nick of Time 2
17 In the Nick of Time 3
18 Man O' War and Sea Urchin Cutscene 1
19 Man O' War and Sea Urchin Cutscene 2
20 Prehistoric Panic Briefing
21 Prehistoric Panic
22 Here Today, Gone Forever 1
23 Here Today, Gone Forever 2
25 City of Darkness
24 City of Darkness Briefing
27 Where Shadows Fall 1
28 Where Shadows Fall 2
26 Where Shadow's Fall 1 Briefing
30 Looking For Trouble 1
29 Looking For Trouble 1 Briefing
32 Wanted - The Minuteman 1 Briefing
31 Wanted - The Minuteman 1 Cutscene
33 Wanted - The Minuteman 3
35 Deja Who 1
34 Deja Who 1 Briefing
36 Seeing Double Briefing
39 Robots on the Rampage 1
37 Robots on the Rampage 1 Briefing 1
38 Robots on the Rampage 1 Briefing 2
40 Robots on the Rampage 2
41 Robots on the Rampage 3
43 The Madness of Mr Mechanical
42 Destruction Production Briefing
45 History Lesson
44 History Lesson Briefing
47 A God Walks the Earth
46 A God Walks the Earth Briefing 1
49 Pandemonium
48 Pandemonium Briefing
50 Beginning of the End Briefing 1
51 Beginning of the End Briefing 2
52 The End of Time 1 Briefing
53 Game Over

I really love to know which one the end credits theme. Thank you.

I wholeheartedly concur. Consequently, we must cobble a list together, harnessing the gestalt phalanx of internet teamwork. I shall humbly deign to begin by pointing out that the Nuclear Winter theme is titled 'm04a.mp3'.

Unfortunately
The music here is put into technical numerical titles instead of actual names
Making it impossible to actually select the songs we like

Sure, you could go through all 100 of these
But why should you have to do that?