Windows 7 - Any way to adjust MIDI playback volume? MIDI playback way to loud!

Hello. I am playing a game which uses midi files for background music. Unfortunately, the midi playback volume is ALWAYS maxed out, such that it drowns out voices. Is there a way to adjust the audio balance so that the midi volume is quieter than other sounds? I remember windows XP had a bunch of audio balance options (left/right speaker, wave, midi, etc...):

http://i.imgur.com/9BdlE.png

but Windows 7 only has left and right balance. Help?

Haven't heard the term MIDI used for a long time.
Did you scroll down in the speaker volume popup? If you have more than two speakers defined, there should be a scroll bar on the right.

Speaker volume popup? I'm not sure what you mean... I have two speakers defined: My 5.1 surround sound and my headphones. There's no scroll bar that I see. I can raise the master volume, but the midi volume is linked, so it always overpowers voices and sound effects. In XP, there was the option to lower the midi output volume independent of the master volume. I can't figure out how to do this in Windows 7.

I found a program called "TiMidity++" which seems to be an alternative to the default windows midi synth, but I can't figure out how to lower it's (Timidity's) volume either.

I tried another program called loopBe internal midi, but I get no midi sound at all while using it. Right now though, that's actually preferable to the midi volume overpowering every other sound in game. The in game volume control for the background music (midi) has no effect whatsoever. I't really like to halve the midi volume because no background music is definitely hurting the experience.

Do you have SW Synth (or similar) as a volume control option? If so, try lowering that.

I don't see an option like that but it's exactly what I'm looking for! Do you have that option? Where would I find it?

Right click the speaker in the lower right of the screen, select Sound.
On the Sound pop-up, select Playback tab.
Select Speakers, then click on Properties.

On the Speaker Properties pop-up, click the Levels tab.
The scroll bar should be on the right for all speakers and input the system recognizes.
Line-in, Microphone, Side, Front, Rear, Center and Subwoofer or whatever you have. Each of those have a slider to adjust level.

But...I don't know how you're getting 5.1 if you only have two speakers. And, I'm assuming you're using the Realtek drivers.

Oh, crap. Sorry. I have two sets of speakers. My headphones (stereo) and my Logitech X540 speakers (5.1)

For my stereo headphones, the only level option I have is master volume. For my 5.1 set, I have Master volume, CD Audio, Microphone, FrontMic, Line In, Side, Center, Subwoofer, Rear and Front. No option for SW Synth volume for either set of speakers.

And yes, I am using Realtek drivers. There's no SW Synth volume setting in the Realtek control panel either.

EDIT: I just tried playing a MIDI sample. With WMP, I can adjust the volume of the midi in the program, but with MPC-HC, I can't. Maybe that's related to my problem?

Did you try adjusting the Line-in slider? Just guessing though.

It's already muted and at 0%

I tried every slider with no luck. If they do lower the midi volume, they lower every other sound as well, which doesn't help at all.

And there's no volume control in the game? Well, I can't help any more--Sorry. Well, there may be one more place to look. Instead of the Playback tab, click on the Recording tab on the Sound window. What do you show there? If Stereo Mix is not showing as a device, right click anywhere in the center box and check-mark both boxes.
What have you got there?