Selling, giving, or loaning an LP and never getting it back is legal. What is not legal is to make a copy of an LP, tape, or CD, then selling the original media while keeping the copy.

I don't think that there is an issue with Murfie pulling rip data from a file, rather than freshly ripping each item that is sent to them, however, selling a copy to a person who did not own the media is a problem. The original Napser was slippery on this point and got into a little trouble.

You CAN'T select the HDMI input as a source in another room(s).
You can group the HDMI input into another room(s).

So, in this example, if the CD isn't playing in the room the AMP is in, you can't listen to CD in other rooms.

And, so all are aware the converter dongle ISN'T included with the AMP the way it is with the Beam, sold separately.

You can buy a Bi-amp Nexia VC on Ebay for $20 right now.

Run your sources into it, set up all inputs on a mixer so no manual switching etc is needed. This will work fine if he doesn't plan on using both sources at the same time in different rooms.

It has enough for two stereo outputs, output to sonos, output to receiver.

It's overkill and used product, but it won't break.