It works fine for me, though I am on Windows. I don't think that sould make much of a difference with DOSBox, though. Here is what I have in my dosbox.conf [autoexec] section. every thing else is set to defaults:

1mount c "C:\Adventure\CCS\" 
2c:
3CCS.EXE
4exit

You would, of course, mount the C: drive as where you have your game files. I have all of the files from the CD copied to my CCS folder.

My LEGEND.INI has

1KEYBOARD=NORMAL
2MOUSE=MOUSE
3PICDATA=.\
4VOCDATA=.\
5SAVEDATA=.\
6QDATA=.\

The .\ makes the game look to its own folder for its resources.

My DIG.INI has

1;
2;Miles Design Audio Interface Library V3.03 of 18-Jun-95
3;
4
5DEVICE      Creative Labs Sound Blaster 16 or AWE32
6DRIVER      SB16.DIG
7IO_ADDR     220h
8IRQ         -1
9DMA_8_BIT   -1
10DMA_16_BIT  -1

and my MDI.INI has :

1;
2;Miles Design Audio Interface Library V3.03 of 18-Jun-95
3;
4
5DEVICE      Creative Labs Sound Blaster or 100% compatible
6DRIVER      SBLASTER.MDI
7IO_ADDR     220h
8IRQ         -1
9DMA_8_BIT   -1
10DMA_16_BIT  -1

Try copying all the files from the CD to the game's folder on your HDD and edit the config files as above.

Edited LEGEND.INI accordingly and created a DIG.INI file with that contents in the Callahan folder (there wasn't one for whatever reason), but still getting the same problem.

Also tried turning off MIDI music and leaving voice on, same thing happened.

Did you copy all the files from the CD?

turn ems on (ems on) on the prompt before starting the game

[MOVED]

Yep, copied all the files.

May I ask what ems are?

Check your dosbox configuration file.
Or type "ems true" before starting the game along with "ems" alone
to check that the setting was accepted.

Ok, tried that, same thing happened. 🙁

Post the content of your ini files as well as the output of MEM when
typed right before you start the game.

Which is the MEM output?
Also, on OS X, how does one locate the DOSbox config file? (Trying to install C&C: Red Alert at the same time)

LEGEND.INI
KEYBOARD=NORMAL
MOUSE=MOUSE
PICDATA=.\
VOCDATA=.\
SAVEDATA=.\
QDATA=.\

MDI.INI

;
;Miles Design Audio Interface Library V3.03 of 18-Jun-95
;

DEVICE Creative Labs Sound Blaster or 100% compatible
DRIVER SBLASTER.MDI
IO_ADDR 220h
IRQ -1
DMA_8_BIT -1
DMA_16_BIT -1

DIG.INI

;
;Miles Design Audio Interface Library V3.03 of 18-Jun-95
;

DEVICE Creative Labs Sound Blaster or 100% compatible
DRIVER SBLASTER.DIG
IO_ADDR 220h
IRQ 7
DMA_8_BIT 1
DMA_16_BIT -1

From the command prompt in DOSBox, type mem

isafos wrote:

Also, on OS X, how does one locate the DOSbox config file?

Depends.... See the bottom of this thread:
60 seconds guide to getting your game to run in DOSBox

I'm having the exact problem. Runs fine without sound, but that error pops up if sound is configured. The INI files match collector's in the second post. Output of MEM is:

1634 Kb free conventional memory
263 Kb free upper memory in 1 blocks (largest UMB 63 Kb)
315280 Kb free extended memory
415280 Kb free expanded memory

Ok. Nevermind. I found the source of the problem. Missed some of the files. xcopy FTW. Works great now.