Here's the config file I use for BLOOD. Just add the mounting and navigating commands at the end of the file for your convinience.
I would strongly recommend that you select "Sound Blaster" as your Sound FX Card, "Sound Blaster 2.0" as the sound card type. Default Dosbox Sound Blaster address is 0x220, the IRQ and the DMA's are respectively: 7, 1, 5. The further settings should be set up as follows: 16 Voices, 16 Bit mixing, Stereo Sound, 22 Khz (this is very important. if you have resources to spare, select 44 Khz).
Some of us have been experimenting and found that this combination simply works the best in Dosbox. Sound Blaster / SB 2.0 seems to be the least of a strain for Dosbox to process. Also remember that Mixing Rate impacts the performance. If you want to enjoy 44Khz sound, you will have to edit your .conf file, and change:
to: