I doubt BlueOS is open-source and therefore available to run on a Pi. An alternative may be to use the chromecast bridge plugin in the Logitech Media Server so that the Idagio app on Android recognizes the Pi + DAC as Chromecast device. (Note that Chromecast is available only in the Idagio app on Android, but Android devices are relatively cheap if you do not already have one.). The whole thing is a bit of kludge, and lets hope that Idagio offers more options in the future. (Who can afford a Burmester system, one of the hifi-companies that Idagio appears to partner with? What sort of marketing decision was this?)
