push button
.-----.
|  _  |
| (_) |
|     |
'-----'

    +----+ +----+ +----+ +----+ +----+ +----+
    | << | |  > | | ][ | | [] | | >> | | -^-|
    +----+ +----+ +----+ +----+ +----+ +----+
    rewind  play  pause   stop  forward eject