2x Play5 + 1x Line-in Cable + iPad + Bridge = Annoying mess.

God damn it's annoying setting up stereo pairing between two speakers when you line in one speaker with the iPad.

I have searched extensively and tried everything.

Stereo pairing works flawlessly when I use the integrated Spotify Application through the Sonos Bridge. But when I switch to Line In (I want to play songs off youtube on my iPad) only one speaker will work, even though stereo pair is turned on.

Is it even possible to stereo pair them when you use line in to only one speaker? Or do I need to plug in two Line In cables in each speaker?

Someone told me I only need to Line In one cable from my iPad to only ONE speaker and then the speaker will automatically pair with the second one.

But I only get sound out of one speaker. This problem is extremely frustrating because I bet the solution is super simple.

And yes I tried to link the two Play5 with a internet cable and it still isn't working.

EDIT: Ok so when I switch the in-line cable from the left speaker to the right the sonos app shows me Line In (R), but the sound from the right speaker still comes out of the left speaker. Even though that speaker isn't even connected to the line in cable. This of course when internet cable is connect the two speaker, without it, it's not working at all.