The tv logos should be removed from git as they might need updates (adding new, deleting obsolete ones) too often.

The tv and radio logos should be downloaded on first demand instead. The internal interfaces should be designed very generic so that the retrieval of the logos can be updated or replaced easily.
For the first implementation the existing logo online repository can be used.
See http://forum.team-mediaportal.com/threads/logomanager-0-0-0-1-31-05-2013.119376/