The thing that springs to mind relating relating to the music problem is: tumblr blogs. I've been a few times in a situation that I opened a tumblr blog (fandom blog) to read some news about a TV show, just to forget about the tab later. It sometimes takes a few minutes for the files to download (not sure why either, maybe there is an artificial delay added) and they start playing randomly, and then you're left wondering what the hell is happening. Granted, it happened only once or twice.