Space bar plays music or video
73852
How do I enable MP3 preview?
45522
How to detect that music play in background
18548
Playing a video in full screen after startup
3850
Media keys not working for iTunes (pause/play, skip buttons)
16042
How to play a YouTube clip in background/minimised?
141832
Changing background music smoothly
61112
MPMoviePlayerController not playing any video content [due to ARC and memory management]
119810
How do I capture the audio that is being played?
152288
How can I change media volume when no media is being played?
64889
How do I disable the media keys (play, pause, skip, etc.) on the macOS login window?
144484
Creating system sounds
33465
How can I play sound in Java?
97719
iphone app allow background music to continue to play
39761
Stack Exchange for Popular Music and Music Videos
63120
Play sound through two or more outputs/devices
146167
How can I mute the YouTube app while playing music on another player?
117518
Why do video streaming services buffer when I plug in my headphones?