Thanks for the reply.
I use Bluesound music streaming software and players, three of them in different rooms. I find they are very high sound quality and true Hi-Resolution audio signals come through without downgrading the audio quality.
When on the same subnet as the controlling device (iPad, iPhone, Mac, etc) it works fine. I have been researching this with them too. It appears they use Apples’ Bonjour for connecting and they say it is a problem if a device is on a different subnet.
It does look like they may have a workaround, but it may be more trouble than it is worth.
As for the printer I will look into it to see if it works, and is worth the effort.
Thanks for the help.
Ron