"They do not listen to music during lunch."
Translation:Oni nie słuchają muzyki podczas obiadu.
Well, it's the infinitive form, "to listen". It appeared on top because multi-word hints appear on top, even if they are not applicable for the given sentence (the hints are for the whole course).
But I just modified the hints so "słuchają" will also be defined on "listen to".
The reason this hint is on "listen to" and not just "listen" is to put the learner's attention to the fact that there isn't any equivalent of "to" in the Polish sentence, you just "listen something" in Polish.