From the developer: ?This is the 'Easy to Use' Duo Timbral Midi Router for Windows. It has 1 Midi In and 1 Midi Out port which can route your keyboard to 2 seperate sounds of your Multi Timbral Output. Options: Volume, Balance, Reverb and Chorus levels Velocity adjustment ProgramChange , Volume , Modulation and Pitchbend Filter Midichannel , Bank and Program Change Octaver with 1 octave up and 1 octave down adding Mouse playable keyboard with velocity option (clicking lower on the key makes the velocity lower) Computer keyboard playing Keyboard split function System wide Midi Routing Midi in velocity VU meter 8 user presets.?