Did you check the volume control on the ESS? ESS has a seperate slider for wavetables. Called AUXB perhaps. Also MPU must be enabled, check the driver settings.

I was just able to get back to check this today... I verified that the volume on Auxb was set to 8 (same as the others) and through esscfg.exe that the MPU was enabled. I just tried changing the settings for the MPU with the same result. To test in DOS I loaded up dosmid.exe /mpu and it'll show that it's playing a .mid file but I only hear some clicks and a bit of noise. I get the same in Win98 when I try to play something through the MPU as well. I don't have another daughterboard or soundcard with a wavetable header to test with so I'm stuck thinking that maybe the board is bad. Thanks for the help anyway.

Hearing clicks when playing a MIDI isn't promising... Is this the full sized Monster MIDI board?

Yeah, that's what I figured. And it is this one:

It's a SAM9733 I think. Any components looking bad? I assume you have it installed in the correct orientation?

You're right, it's the SAM9733. I can't see any damage on the daughterboard or sound card. I've had it bagged since the late 90s and hadn't messed with it since and I can't remember having any problems back in the day (doesn't mean there wasn't a problem, I just can't remember). As far as orientation... I only took the board off recently, so unless it came from the factory installed wrong I believe it's correct.