This is really tragic. The only MAJOR thing missing in Airfoil for iOS is the ability to control the Airfoil-send-to-device-buttons and adjust the separate volume-sliders. I cannot see why this isnt already built in in Airfoil for iOS. It's just tragic.

I wanna be able to listen to music, and with a tap turn off the music in my living room, right in the Airfoil-app on my iPhone.