Is it an offense?

Hare Krsna dear Devotees, accept my humble obeisances!

When chanting the Name, one is to be very attentive, but how about listening to a kirtan or similar glorification of Krsna. I mean when not being in one, but having just an audio, is it okay to leave it in the background without concentrating on it? I believe that's not the the case, but a doubt came, so in order to get rid of it, I just want to make sure Krsna won't be offended, I'd like to hear the answer from someone who knows for sure. This sounds like a silly question for me though.