List here for reference when setting the track types in the lua for a custom soundtrack

1 - Basement
2 - Cellar
3 - Burning Basement
4 - Caves
5 - Catacombs
6 - Flooded Caves
7 - Depths
8 - Necropolis
9 - Dank Depths
10 - Womb/Utero
11 - Scarred Womb
12 - Blue Womb
13 - Sheol
14 - Cathedral
15 - Dark Room
16 - Chest
17 - Void

18 - Library Room
19 - Devil Room appear (jingle)
20 - Devil Room
21 - Holy Room Find (jingle)
22 - Angel Room
23 - Shop Room
24 - Arcade Room
25 - Secret Room Find (jingle)
26 - Secret Room
27 - Treasure Room Entry (jingle) 1
28 - Treasure Room Entry (jingle) 2
29 - Treasure Room Entry (jingle) 3
30 - Treasure Room Entry (jingle) 4
31 - Boss Room (empty)
32 - Challenge Room Entry (jingle)
33 - Challenge Room (fight)
34 - Challenge Room Outro (jingle)
35 - Boss (jingle)

36 - Boss
37 - Boss (alternate)
38 - Boss (Depths - Mom)
39 - Boss (Womb - Mom's Heart)
40 - Boss (Cathedral - Isaac)
41 - Boss (Sheol - Satan)
42 - Boss (Dark Room)
43 - Boss (Chest - ???)
44 - Boss (Blue Womb - Hush)
45 - Boss (Ultra Greed)
46 - Boss (Void)
47 - Boss Death (jingle)
48 - Boss Death Alternate (jingle)
49 - Boss Hush Death (jingle)
50 - Boss (Mega Satan)


51 - Utero
52 - Downpour
53 - Dross
54 - Mines
55 - Ashpit
56 - Mausoleum
57 - Gehenna
58 - Corpse
59 - Home

60 - Abandoned Mineshaft
61 - Mineshaft Escape
62 - Planetarium
63 - Secret Room Alt
64 - Secret Room Alt Alt

65 - Boss Rush
66 - Boss Rush (jingle)
67 - Boss Room (empty, twisted)
68 - Mom's Shadow Intro
69 - Strange Door (jingle)
70 - Echoes Reverse

71 - Boss (alternate alternate)
72 - Boss (Mother)
73 - Dogma Intro
74 - Boss (Dogma)
75 - Boss (Beast)
76 - Boss Death Alternate Alternate (jingle)
77 - Boss Mother Death (jingle)
78 - Boss Dogma Death (jingle)
79 - Boss Beast Death (jingle)

80 - Downpour (reversed)
81 - Dross (reversed)
82 - Genesis (reversed)

83 - Game Over (jingle)
84 - Game Over
85 - Boss (Hush Phase 1)

86 - Nightmare
87 - Dogma Nightmare