MusicCast WXC-50 has Napster, Sirius, Pandora, Spotify, Airplay, Tidal and Deezer. It can connect to a server, use a USB drive as a source, Net Radio, Bluetooth and has an Aux in/out- it also has optical in/out, digital coax in, analog line out, and can be used as a source (called 'Player', with fixed output) or in preamp mode, with variable output level. I use one as the preamp in my system and it works great- I think it's three years old, now.

Oh, yeah- it also has an IR input jack, 12V trigger and subwoofer output. I don't know about URC, RTi, etc, but Harmony can control this via IP, too. In addition, the web interface for general use and setup is great.

If you didn't/don't hardwire, you're asking for trouble, with any streaming device. It may work on WiFi when you're on site, but as soon as t hey have a houseful of people with smart phones and everyone's on the same node as the AV system, it can really slow down.