Thank you Diki. I will do one step at a time. I just learned the other day to record audio with the BK-9 thru a Yamaha MG-10XU mixer via USB into the Pro Audio 9. When I did the recording I played the keyboard with a MIDI drum track that was played from the Pro Audio9, when I re-played the recording the audio was late couple of milliseconds. I went into the Option and Audio and there was a button to configure the sound card of the PC, or something like that. After that I did another recording and the audio was on time. Was this some kind of latency issue? I even fired up my second BK-9 thinking that the DAW was freaking out the PC's sound card and used the second BK-9 as a sound module with a MIDI cable from the PC, while the first BK-9 was used to provide the audio signal (left and right output) into the mixer(audio interface) and into the PC. It worked, question is -> Is this a bad practice what I did?