[PROBLEM] Crackling audio when playing 5.1 FLAC over HDMI

[DRONE7]

That thread is about creating an AC3 or DTS stream over an optical toslink connection.

HDMI supports uncompressed surround output, and as I said in the original post, it's *already* doing so. The surround is there, it's just all crackly and noisy.

1) correct, but a search failed to find any other threads relevant to HDMI and surround.
2)"HDMI supports uncompressed surround output" but AFAIK MPD does not.
3) I'm happy to be proved wrong   and if you can find any reference in the linked MPD documents to surround over HDMI then please post and we can take it from there...