This game uses MIDI for it's background music, so you need to have a working MIDI synthesizer on you system.
Most integrated cards and some low end discrete cards don't have a hardware synthesizer, so you need to configure timidity to emulate it.
On cards where there is a hardware synthesizer, like most creative cards, you need to load a sound bank into the card using asfxload. You can find the banks in the drivers cd that comes with the card, as files with "sf2" extension.