So a while ago I found a demo of an unreleased RPG game called The Seventh Sword of Mendor on a coverdisk, and it works fine in DOSBox, but only if there is no sound. If I set it to use Sound Blaster or Sound Blaster Pro it freezes DOSBox right after the publisher's logo. loadfix did not help.

I packed and uploaded the demo here. You don't need to install it with INSTALL.BAT, INST.EXE is used to configure the sound device.