The guitar port has a wah effect built into it, but it's just a knob in the software that you have to use your mouse to turn. That is totally worthless, even if I am just practicing alone. I can't just reach over with one hand while I'm playing to use the effect. Is there any way to really make use of this thing (DIY footswitch, some 3rd party addon maybe?) or do I just need to buy a separate wah pedal?