Bert Visser :
Do you have a soundfont loaded on the Audigy?
No, but should amidi with "--dump" show any data that's coming from my
Yamaha keyboard?
Is the synth-knob active in the mixer and is the slider up?
Yes, slider's up and active.
Have you tried toggling the analog/digital output in the mixer (if
it's there)?
Yes, audio works fine and midi is working too (I can listen to .mid
-files), but playing works only with Virtual Keyboard.
Can you send midi data the other way, i.e from computer to the PSR?
No.