I went through the cabled vs wireless run around with Q-Symphony as well until I just settled on using wireless.

The main, unsolved issue was getting the Samsung remote to also work as the cable box remote. Spent 2 full days working on that, to no avail. This will be the last Samsung TV I ever buy. It's back to projectors or industry display TVs for me.

I actually recall seeing an option on my TV to set up the Samsung remote as a ‘universal’ controller. I haven’t had the need to do so because I have a Philips Sync Box that handles HDMI-CEC for me (So I can basically use the TV’s controller on the devices connected to the Sync Box).

Oddly enough (At least in my model) the ‘trigger’ to setup the universal remote is within the ‘input sources’ menu?