aural leakage
noun phrase
An accidental and embarrassing sharing of music or other audio.
Leni was listing to her music and generally having a great time, until she accidentally pulled her headphones right out of their jack, and ABBA began blaring out of her laptop speakers. Trying to ignore the stares from the other coffee shop patrons, she scrambled to hit the mute button and put an end to the aural leakage.