Martian Memorandum

I don't know if anyone here still plays the earlier Tex games, but here goes.

On my DOS machine I'm running:

Pentium III 1.4Ghz
256mb RAM
Voodoo5 5500
Soundblaster AWE32
Roland MPU-IPC with attached Roland CM-32L (MT-32 module)
MS-DOS 7.10 (Windows 98SE DOS Mode boot)

Now I've configured MM for Roland music and SB sound, and the sound plays OK. The music, however is another issue. The CM-32L just ends up playing random notes/sound effects other than recognizable music (i've heard the MM soundtrack before). MM seems to be the only game in my MT-32 games collection that has a problem, and I'm pretty sure there isn't a hardware conflict.

Here's my Config.sys:

DOS=SINGLE
SWITCHES=/F
DOS=HIGH,UMB,AUTO
DEVICE=C:\WINDOWS\COMMAND\UMBPCI.SYS
DEVICE=C:\WINDOWS\COMMAND\HIRAM.EXE
DEVICEHIGH=C:\WINDOWS\HIMEM.SYS /TESTMEM:OFF /NUMHANDLES=128
BUFFERS=10,0
FILES=60
LASTDRIVE=D
FCBS=1,0
STACKS=0,0
DEVICE=C:\WINDOWS\COMMAND\XDMA.SYS /L /O
REM DEVICEHIGH=C:\AWE32\DRV\CSP.SYS /P:220
DEVICEHIGH=C:\AWE32\DRV\CSP.SYS /UNIT=0 /BLASTER=A:220
DEVICEHIGH=C:\AWE32\DRV\CTSB16.SYS /UNIT=0 /BLASTER=A:220 I:7 D:1 H:7
DEVICEHIGH=C:\AWE32\DRV\CTMMSYS.SYS
DEVICEHIGH=C:\WINDOWS\COMMAND\XCDROM.SYS /D:MSCD001
SHELL=C:\COMMAND.COM C:\ /E:2048 /L:128 /U:128 /P /F
ACCDATE=C- D-
SET PATH=C:\;C:\WINDOWS;C:\WINDOWS\COMMAND;C:\FASTVID
SET TEMP=C:\WINDOWS\TEMP
SET TMP=C:\WINDOWS\TEMP

And my Autoexec.bat:

@ECHO OFF
FASTVID XX1 16 D8000000
C:\WINDOWS\COMMAND\SHCDX33A /D:MSCD001,D
LOADHIGH=C:\CTMOUSE\CTMOUSE.EXE
MODE.COM CON RATE=32 DELAY=1
SET DIRCMD=/A/O:GEN/P/V
SET DOS32A=C:\D32A /NOWARN:9003
SET SOUND=C:\AWE32
SET BLASTER=A220 I7 D1 H7 P300 E620 T6
SET MIDI=SYNTH:1 MAP:E MODE:0
REM C:\AWE32\DIAGNOSE /S
C:\AWE32\AWEUTIL /S
C:\AWE32\MIXERSET /P /Q
REM
REM The following lines have been created by Windows. Do not modify them.
REM
C:
CD C:\WINDOWS
CALL C:\WINDOWS\COMMAND.COM
C:\WINDOWS\WIN.COM /WX

Any suggestions? Anyone with an old-school MPU-401 interface and running DOS?