connecting aux speaker to surround sound

[Tydeocean]

Hey,
I'm trying to see if it would be possible to connect a pair of speakers which receives audio through an aux cord to my 5.1 receiver. I would like for all 5 surround sound speakers playing in one room and the other room playing in a adjacent room. The whole point of this is to have the two rooms be in unison wit each other so if their are any other ideas please let me know. I will be using Spotify as my music streamer.

 

[americanaudiophile]

You won't get an exact answer without makes and models of the receiver and remote speakers.
If the speakers are passive then you can connect them to the B speakers terminals if you have those or you would need an impedance matching speaker selector connected to the front left/right speaker terminals.
If they are self powered speakers then you will need to connect them to a line level record output on the receiver or if you don't have that then you need a speaker to line level converter attached to the same speaker terminals as mentioned above to get audio to the remote speakers.