I've long dreamt of a way to control Play Music on my desktop with my phone. It's one of those things I'd basically given up on, until I found out about Desktop Remote, for Google Play Music. It uses a "wrapped" web Play Music interface so your phone can control the music playing on your desktop PC.
I've been using this today and I can say it works really well. Much like Radiant Player for macOS or the official Chrome extension, it controls the function keys so the play/pause/skip buttons work for Play Music.Read More
Remote for Google Play Music Desktop Player controls Play Music on your computer was written by the awesome team at Android Police.