Studolive 32: Add functionality to Aux inputs

The two aux inputs have very limited features. Expanding these to mimic analog soundboard stereo inputs would be very beneficial. Actually adding a 2nd tape input would help too. Our live mix features multiple cd player, iPad, and computer sources.

For existing aux inputs, the following is on m wishlist:

1) input trim to optimize input levels coming into the board

2) input assign switches: normal stereo, either left / right select to both (mono) outputs. This later requirement is for split track CD s.

3) full effects: parametric EQ, gate, compression