def tracks_in_collection(start=nil,count=nil,sort=nil,
                             query=nil,extras=nil)
      api.getTracksInCollection self,start,count,sort,query,extras
    end
def tracks_in_collection(start=nil,count=nil,sort=nil,
                             query=nil,extras=nil)
      api.getTracksInCollection self,start,count,sort,query,extras
    end
Get all of the tracks in the user's collection.