First hello team, I'm glad more people have interests in development on tiny computer for hifi !
I was googling for a device that could play 1080p videos and transfer the audio to an usb dac, my main concern still focusing on an hifi digital player.
I'm following progress on the Raspyfi project, and the intentions of the creator to make it cross-platform.
He make a WebUI that looks close to yours, and seems to be italian too, share the same goals, so I wondered if you may have any link with him ?
I'm not equiped with hardware now, wondering wich would best match my requirements (video playback + bit perfect audio), so I can't help you test your system now.
Good luck with your project, Antoine.