I've tried everything I can think of to allow my USB Midi keyboard to drive the DXi synth selected in the Audio/Midi config dialog box, but it only works while BIAB is playing a song. As soon as the song ends, the synth appears to be shut down, with no audio output.

I'm just trying to do what I would do with a hardware synth driven by my Midi keyboard's MIDI-OUT so I can practice some stuff before I start to record or play along. Seems like it should be really simple to let the DXi host app (contained within BIAB) keep accepting midi input and generating audio output.

I suppose BIAB has this behavior since a software synth consumes CPU cycles and in general it is best not to run the synth when no output is desired. However, I've even failed creating a single infinite-loop silent song so I can start it and then play the keyboard. Any suggestions?