Matt,
Thanks for the detailed info!
I did had the SD-50 working, before my update to WIN 10 and it does indeed sound great.

I reinstalled BIAB (running from external hard drive), just to be sure it was properly installed under WIN 10.
When it was installed, it continued to install REAL instr. and drums, something I cannot remember I had seen before.

I have followed your directions concerning were the real instr. and drums are located (F in my case). When I use the Audio Driver Setup I can hear the piano scale from the SD-50, however when playing back a song, I still can only hear the MIDI sounds.
Under the Synth/Soundcard I have selected “General MIDI Instrument Misc.”

Do you have more tips?
Thanks,
Tonnie