Sadly, yes :( I am such a creature that inflicts my techiness on my younglings! If they get to listen to some kids radio play on a long road trip, then I get to listen to my fav stuff for part of the trip (I'd wear headphones, but it's illegal here in Canada to wear them while driving).

I'm a sad, sad man :( Aren't you glad I'm not your dad :)

As for headphones at work, that's what I do. I do know that some like to play stuff for the techs around them, but it's the managers who have a hissy fit if someone drops an f-bomb or a crude joke. Personally I wouldn't want to work at such a place, but there are more oppressive, bureaucratic work environments out there than there are cool places like 37signals.