About 

The player calls this function when the user requests information about the plug-in. 

Configure 

The player will call this function when the user wants to configure the plug-in. 

CreateDecoderInstance 

The player calls this function to create an separate instance of a decoder. 

Eject 

The player will call this function to operate the tray for removable media. 

GetCurrentPosition 

The player calls this function to determine the precise playback position of the audio. 

GetMediaSupported 

The player calls this function to determine if the plug-in supports a given media file. 

GetTrackExtents 

The player calls this function to determine the duration of the given media. 

Initialize 

The player calls this function to initialize the plug-in. 

Pause 

The player calls this function to pause or resume decoding in the plug-in. 

Play 

The player calls this function to begin or resume playback of the given media. 

SetEQ 

The player calls this function when the equalizer settings have changed. 

SetVolume 

The player calls this function when the volume or balance settings have changed. 

ShutDown 

The player calls this function to shutdown the plug-in. 

Stop 

The player calls this function to stop decoding in the plug-in. 

Reserved 

Used internally or reserved for future expansion