larger gui window
convertin 4-channel to 6-channel
add footsteps to ikzoekjeniet
add verb channel to ikzoekjeniet
changes to verb

now supports 6 channels in/4 channel out, for quadraphonic extra
speakers. Also supports dry signal, which can have a hi-cut -> extra
speakers as subwoofer
add speakerCorrect

a live limiter for the transducer speakers (ch1-6)