Sound plays outside of Play mode.

I have a problem with the current project I’m working on.
Everytime I open the Project, the Music track and sound effects I have playing on begin play, start playing even though I’m in the Editor, not running play mode.
Play mode itself isn’t running or something, it just starts playing the sound of waves, the music, the sound effects from my pawn colliding with the ground.
I have no idea what’s going wrong and googling didn’t help.
Is this just a wrong setting I checked? Or is my project somehow bugged? Engine maybe?
I dunno, any help is much appreciated.

The only way i’ve been able to reproduce this is by having a looping sound with “Is UISound” toggled to “True” turn this parameter off for your looping sounds and you should be fine.

86098-isuisound.png

Might want to make sure you have the “real-time” audio disabled if you 't want to hear audio while in editor but not in play mode.

Settings->Real-time Audio