246 Photos, videos, and music
While playing a media on another device, you can press BACK and do
other things on your phone. To return to the Controller screen, slide open the
Notifications panel, and then tap the device you’re connected to.
6. To stop sharing your media, tap to disconnect your phone
from the other device.
Until you disconnect the phone from the other device, other media that you
open from the Gallery or Music app are shared on the other device.