I've experimented with a setup that seems to work for me, is quite convenient, and which I don't believe degradates the sound quality (please let me know if that's not true). I use my iPad for general music control (wireless to TaikoRouter), but have relied on my desktop previously for VPN and other access modes to the Extreme via my home network. Since that access is cut-off now, I've set up my laptop (PC) with a wired connection to my home network and simultaneously a wireless connection to TaikoRouter. I can then use the laptop directly to access both, but prefer to work from my main PC. So I connect to my laptop via TeamViewer, so I can access both networks "remotely" via TV. Seems to work fine. And I don't normally leave the laptop on, so these connections are not active during listening sessions.
All of this doesn't get around having to set up a USB drive on the router for backups and file uploads, for example, but still I thought it might be useful info for others.