Here's what I found out through trial and error. The PX-350 works with my DAW (Tracktion T-7.2.1) if I unplug the USB MIDI cable and go with the the two DIN's ONLY. The DINs connect to an Akai EIE Pro interface. The local control on the piano can remain on if you'd like. Simply turn down the piano's volume control to get the full sound of the synth in the DAW. Now if I want to control a stand-alone VSTi with the DAW off, I reconnect the USB MIDI cable, and disconnect the two DIN plugs. Nowhere in the manual is this mentioned. Actually, the stand-alone units work with either plug setup separately. This is all on MIDI channel 1 by the way. I hope you guys try this out first before other options. Let me know how it works out for you.