Don't sweat it - you are, of course, totally right. This is something that's been on the back of my mind as a clever joke for a few years. The music is definitely not something I'm going to install long-term.

I've turned the volume up really loud for my demonstration in the video. And in reality I haven't got a song for every staff member. It also only plays once per day before 9am. It's smart enough to last at least a couple of weeks before we all decide it was a clever hack but is annoying as f*ck!

Thanks for the nice comments otherwise, though. :)