Put Dune 2 SCDB Mix (PC Speaker, Tandy 3-voice, AdLib, MT-32 and SC-55) here.

Download from:
https://www.moddb.com/downloads/dune-ii-soundtrack-5-device-scdb-mix

Make sure, file-names are exactly as listed below.
(The file-type can be either flac, mp3, ogg or aud.)

List of files:

01 - Westwood Studios Logo.flac
02 - Introduction.flac
03 - Main Menu.flac
04.1 - Mentat (Atreides) - The Council.flac
04.2 - Mentat (Ordos) - Disturbed Thoughts.flac
04.3 - Mentat (Harkonnen).flac
05 - Map Screen.flac
06 - The Building of a Dynasty.flac
07 - Dark Technology.flac
08 - Rulers of Arrakis.flac
09 - Desert of Doom.flac
10 - Faithful Warriors.flac
11 - Spice Melange.flac
12 - The Prophecy (part 1).flac
13 - The Prophecy (part 2).flac
14 - For Those Fallen.flac
15.1 - Win Theme (Atreides).flac
15.2 - Win Theme (Ordos).flac
15.3 - Win Theme (Harkonnen).flac
16 - Emperor Theme.flac
17.1 - Defeat (Atreides).flac
17.2 - Defeat (Ordos).flac
17.3 - Defeat (Harkonnen).flac
18 - Into the Heat.flac
19 - Epic War.flac
20 - Humans Fall.flac
21 - Adrenaline Rush.flac
22 - Only the Strongest Survives.flac
23 - Marching Towards the End.flac
24.1 - Ending (Atreides).flac
24.2 - Ending (Ordos).flac
24.3 - Ending (Harkonnen).flac
25 - Credits Theme.flac