Doomsday Problems

I try to boot up jDoom/jHeretic and this pops up:

Sys_InitTimer.
Sys_InitMixer: SiS 7012 Wave
Sfx_Init: Initializing DirectSound...
DS_DSoundInit: EAX initialized.
DS_EAXSetdw (prop:11 value:2) failed. Result: 80004001.

And it crashes. I disable sound and it works. How can I fix it? Can someone help?

Hmm...haven't had this problem before. May want to e-mail Jaako Keranan about this.