I know you can just mute something, but it's baffling whenever someone makes a youtube video for backpacking/fishing etc. that they have to include some generic rock music with it instead of the sounds that were actually included.
Good observation. Not to side-track our thread, but your mention of YouTube videos reminds me of my frustration with some sports-highlight montages in which the soundtrack overwhelms it. A backing track is OK but I want the main audio to be play-by-play call of the action.