Although "ear-jamming" occurs in all types of auditory media (radio, TV shows, and movies), it most commonly occurs in documentary-style TV shows and movies.
It usually leads to a situation where viewers are constantly modulating the volume of their TVs as they watch a program in order to either: (1) mitigate the assaultive music or turning the volume down (2) or to hear the now-relatively-quieter underlying dialogue turning the volume up.
When the background music comes on especially suddenly, it is also know as a "music assault".
"Yeah, but the background music was too frigging loud. I couldn't even hear what they were saying with all that ear-jamming."