Just picked up an HD Dock for my Razr for my office since we are not allowing streaming music anymore on networked computers (Still on Verizon Unlimited so I'm good there). Running stock 4.1.2. I'm trying to change the stock music app while in "Desk Mode" and it will only allow me to select Google Music. There is a "Select Others" option but it is greyed out and not selectable. Would anyone know how to go about selecting a different app? I use both Spotify and Slacker and would like to use one of those as the default.