Basic functionality
 + Open file
 + Open URL
 + Start
 + Stop
 + Pause
 + Quit
 + Full screen
 + Context menu
 + Shortcut keys
 + Main window title
 + Volume
 + Mute
 + Seek
 + Autosize
 + Status
 + Recent files
 + Maintain Aspect and Force Aspect options
 + Persist options between sessions
 + Maintain video size when docking states change
 + Enable and disable actions according to state
 + Drag and grop

Additional controls
 + Zoom
 + Frame drop
 + Contrast
 + Brightness
 + Hue
 + Saturation
 + Popup sliders
 + Display mplayer text output
 + Message log and error handling
 + Audio delay
   Tooltips when dragging a slider
   Toolbar configuration dialog
   Equalizer
   Always on top
   Recording

Subtitles
 + Load from file
 + Load from URL
 + Autoload
 + Unload
 + Delay
 + Position
 + Visibility

Configuration dialog
 + Tree like interface
 + GUI-related options
 + MPlayer executable path
 + MPlayer additional options
 + Drivers and codecs
 + Cache size
   Filters
   Fine-tuning wizard

Playlist
 + Name
 + Path or URL
 + Type
 + Length
 + Video size
 + Formats
 + Bitrates
 + Shuffling
 + Allow duplicate entries
 + Size limit
 + Settings
   Remove missing files
   Make combo box editable
   Saving and loading
   Hierarchical structure and navigation
   Hierarchical shuffling
   Searching
   Bookmarks
   Filtering
   Directories as playlists
   Author
   Album
   Title
   Genre

Per file options
 + Properties dialog
 + Update properties with Shift
 + Controls page in Settings

Tabbed interface

Documentation
 + Readme
 + Install
 + HowTo
 + Handbook

DVD and VCD support
 + Playback using dvd:// urls
   Menus
   Chapters
   Titles
   Navigation
   Audio language
   Subtitles by id or language
   Devices
   Eject

KDE Integration
 + MIME file types
 + KPart
 + Playing from KIOSlaves
 + KFileMetaInfo
   Window manager size hints
   Do not show windows in task bar
   Remember dialog position

Advanced options
   DVD options
   VCD options
   CD options
   TV options
   Just about every option from mplayer(1)