Can you help me?

I want play Fury Of the furries with "Gravis Ultrasound" sound.

I use DosBox 0.61, and dosbos always recognize sound blaster. I have directory "Ultrasound" with MIDI patches on real C: and on mounted drive C:.

I try edit dosbox configuration file (change sound blaster from true to false, only ultrasund=true). Now i have no sound - silent.

WHAT I MUST DO IF I WANT PLAY WITH ULTRASOUND ?

SORRY FOR MY POOR ENGLISH

Matthew