I think I was able to do it. Plays music now ... sounds better than my voyage mpd setup that I used so far. Atom D510 board with SOTM usb card and linear power supply into a dcs debussy.Another question regarding the setup: the path on my nas to the musicfolders are /volume1/musicserver/mpd_music. What do I need to enter as share?
Will listen and tweak a bit and report back in a few days.
Thanks again Idolse, great job. And all the others for support.