1. In a user computer, a method comprising: generating a graphical representation of a plurality of metadata database entries corresponding to, audio/video content to be played by a media player application, each metadata entry stored locally at the user computer in the metadata database and characterized in accordance with a plurality of attributes that are associated with the audio/video content and shared between one or more of the plurality of metadata database entries; receiving user input to manually modify one of the shared attributes; recharacterizing in the metadata database, those of the plurality of metadata database entries characterized by the modified one of the shared attributes; and dynamically updating the graphical representation of the one or more of the plurality of metadata database entries based upon the user input.