we always have music playing in the house. We listen to a wide variety so there's no telling what will be on from time to time. We try not to watch a lot of TV around her because we don't want her becoming a couch potato. TV time is limited everyday to one or two kid shows.
As for balancing, I suppose when she is old enough to warrant that we will try to find a balance between not letting her watch anything extreme, but also explaining to her why certain things are inappropriate.