All the soundFX are there and working but the OST isnt playing. In the options menu there is a volume slider but that doesnt seem to change anything. Any ideas how to solve this little problem?

EDIT: Im playing on a mac btw.

What is your primary optical disk drive?

That's your harddisk not your CD/DVD drive ;-)

I don't have the Mac version, but in the install folder (package in your case) of Dungeon Keeper are several Ogg Vorbis sound files (keeper02.ogg, .., keeper07.ogg). These are the soundtrack. The easiest workaround for your problem would be copying them, creating a playlist and running them in an audio player that can play ogg audio files.

The CD version of Dungeon Keeper just played the tracks from the CD as if it was an audio CD. GOG changed this to be able to provide a download version. I don't know how they actually implemented it, but obviously it somehow isn't working in your case. Anyway as I said, the original game just played the CD, so there's nothing wrong with playing the ogg files with a media player in the background.

If you want to get GOG's solution to work, we'll have to find the problem. Dungeon Keeper tries to access/identify the first CD drive in your system (= CD drive with the lowest drive letter on Windows). On Windows there are issues with PCs or laptops not having a CD drive at all or several of them. People were able to get music running by simply putting a CD in their drive or by disabling one or the other drive in case they have more than one. A third solution could be installing a virtual CD drive and mounting a disk (or disabling a virtual CD drive if you have one). I don't know how this works out on a Mac as you're probably simulating a Windows environment with Wine to run the game.

As said before, if nobody comes up with an easy solution, I'd simply play the ogg files.

Cant find any .ogg files when I go through the package contents :/

Aight found them and put them into VLC. The tracks plays just fine and I could let it loop in the backround but isnt there any way to implement the soundtrack into the game? Unless it never really was implemented, as you mentioned the original CD also just played the OST while the game was running.

So far so good ;-) GOG did integrate the tracks into the game somehow and somehow it doesn't work on your system. As I don't have a Mac for testing, it's rather difficult to track the bug. Most of the time it's connected to the system's CD-drive (none, multiple, the wrong one first etc.), but on different systems, different solutions seem to work. You can try installing a virtual drive, deactivating your own etc.

There's also another complicated workaround:
- The KeeperFX patch disables GOG's music integration and forces the original behavior of the game, that is playing the tracks from CD
- So get KeeperFX running on the Mac version
- Create an Audio CD-Image out of the ogg-tracks and mount it to the Boxer environment (The Mac version uses Boxer, which is the Mac port of DOSBox to provide a DOS environment to run this game)

Devilhood provided a how-to for the Windows version (see section "Music"):
http://www.gog.com/forum/dungeon_keeper_series/keeperfx_hires_dk1_latest_builds_and_install_instructions/post1

I quickly tried it on an older iMac with OS X 10.6.8 and also no music. I would open a support ticket and see if it's a known issue.

OK. This took a while to figure out...

The BAT files that start the game mount game.gog (bin file) instead of game.ins (cue file), so the audio tracks are not there as far as keeper.exe is concerned. To fix it, change the "gog" extension to "ins" in the imgmount line in the BAT files (SINGLE.BAT, SINGLE_DEEPER.BAT, MULTI.BAT, MULTI_DEEPER.BAT).

The path to the BAT files: Dungeon Keeper Gold.app/Contents/Resources/Dungeon Keeper.boxer/C.harddisk
For entering "Dungeon Keeper Gold.app", you need to right-click it and select "Show Package Contents". Same for "Dungeon Keeper.boxer".

Reported to GOG. Hoping they will fix this in the download.