Options for multi-room audio?

[haggis999]

What you say confirms what I had read about the RP's USB output. However, the comments I have read about the HDMI output were much more positive.

During my browsing on this topic today I became aware of the Wolfson card but it just seemed to be a way of creating the same sort of audio outputs as a typical PC and I did not get the impression that it had any audiophile pretensions.

David