I have the same setup.

1. The Bose via USB runs fine as the audio device from Win 7 /64. It is mono though.

2. The Ketron I run into 2, there is really no stereo. For simplicity I had the mic into input 1. But that was through a Voicelive.

3. The Ketron is RCA to 2 rca to mono phone plugs I got at Best Buy.

4. My keyboard goes into 3.

5. My AKAI EWI goes into 4.

You can setup the line 4 to control the input from the computer and add effects.

I have the midi Edirol 1 in 1 out I got from PG music. Next day shipping if in stock. Works fine with Band in a box.

I've let 2 of my friends use the setup, on has a family band with 3 kids ages 4 to 7, they bought one after using mine.

The other is a guy who does light jazz gigs with a vocalist and keys with a guy on upright bass. They use the bose as their amp.

Both are happy as am I.

So in short, yes the midi works fine, mine goes from my keyboard thru the computer out to the vocal processor thru to the ketron. I can select and use the upper banks on the ketron no problem. Band in a Box is set to sen midi chords to the vocal box on Midi 5. That works, it changes chord display as intended and harmonizes.

In short it all works, on Win 7, 64 bit, same Ketron, Edirol USB midi device etc.

Some messing around to get your presets they way you want them, effects on channels, reverb levels, volumes but that 's normal. I redid the output volumes on everything with all the bose channel knobs at 12 o'clock and my keyboard at 50 percent volume and the volumes on the band in a box instruments preset the way I want them.

My only current problem is that since I bought it I'm "profoundly" deaf in the upper registers according to the audiologist and I have to get my wife to help me with levels and bass/treble balance.

And second, the stuff I was preparing to do is on hold, until I hopefully recuperate from neck cancer far enough to get back in the swing.

Oh, and I also use the 4th input with the same cable from my mp3 player. I'm presently working on putting christmas sets on one of them (mp3 player) and the other one will be Robbie Burns night stuff. The Burns nite stuff is done from Music Time Deluxe because I can't figure out compound duple/triple/quadruple in Band in a Box. Or so the wife says, and she's the one with 5 years of University Music. Damn woman. She met a friend from university the other day who tells me she was one of the best bassoon players the prof had ever had. I look at her and say "bassoon, you never told me." She says, it's just like an oboe...so I find out she plays both...along with pretty much any band instrument. Oh well. She can't play freaking accordion at all, an she comes back, "who wants to ..." damn woman.

A neat trick. Audacity, free download. Set the Bose as the recording device in Audacity. Fire up a small window in Audacity and click record. Start Band in a Box. Whatever goes in the Bose, ie keyboard, mics, etc. and Band in a Box goes out to a track on the Bose.

Export the Band in a Box file clicking on wav to your desktop.

Import that track (stereo) into Audacity.

Merge the 2.mess with putting the drums in the middle, the mono track in the middle and pan instruments left and right. Some interesting results and sort of instant gratification....

John Conley
Musica est vita