connecting wireless mic to sonos system

Hi

Quick question if I may? I recently bought a wall mounted jukebox and connected through my sonos set up (2 play 1’s, sonos sub and sonos beam) via a sonos port using speaker out on jukebox. The jukebox is basically a rebuilt windows touch screen pc. The jukebox has a Karaoke function and I wanted to know how I could introduce wireless mics to the system also if any ideas please? Someone suggested using a splitter on the port but I fear this would blow the port phono in as the wireless mic phono receiver is battery powered.

Thanks in advance