[Tracker] directly using tracker's databases to add application data

[Jackson Lawson <jacksonlawson55 yahoo com>]

Hi,

i am thinking to directly access tracker's database to add appl. specific data, like music playing state, 
(for data that doesn't have associated ontology mapping) along with tracker's audio/medialist metadata . But 
i am not sure about tracker handling on file changes, does tracker overwrite/delete appl. stored data or how 
flexible to use directly tracker's database? 

Regards,
Jackson