I've been in my office job now for 9 years, my other co-worker 4 years and another 15 years. A male co-worker joined 18 months ago. We always have the radio on. However, a few weeks ago, when I wasn't there, he told my co-worker that he wanted the radio moved away from him, so she moved it closer to us. Now, today, I went to the toilet, came back, and the radio was turned down by him (my co-worker was present). She emailed me to say he turned it down as it was getting on his nerves. Ten minutes later I turned it back up again (as I am not allowing the newest one in the office taking over). Our boss allows us to have the radio and has done all these years. My co-worker said I'm ballsy to turn it up again, but why shouldn't I? He's the second newest in fgs. Was I wrong to turn it back up or something?