plugins/buddypress-media/app/main/controllers/template/template.php does not seem to be part of the templating system.
This template is where the main wireframe markup is served from. Anyone wishing to customise the main wireframe are not able to.
Are you planning to add this template to the templating system? That would make everything customisable. The current templating system allows you to customise just 50% of stuff.