I had a Smith's song playing in windows media player; just one (nothing further on the playlist), I then went away for an hour leaving the computer running as well as windows media player. Anyway I came back and there were all these songs on the playlist which I hadn't loaded or clicked on; most of them from different artists which are in entirely different folders. It's just really bizarre, I don't know how it could have happened and I'm thinking someone accessed my computer remotely. Any insight would be appreciated.
edit: false alarm I think, I could've accessed the library somehow while clicking a few times to bring the screen out of idle, accidentally clicking a song there causing it to play everything.
just in case download malwarebyte and run a scan and enable windows firewall if you have it disabled.