def addToCollection(objs)
      method = 'addToCollection'
      type = true
      args = {:keys=>Rdio::keys(objs)}
      return_object type,method,args,true
    end
def addToCollection(objs)
      method = 'addToCollection'
      type = true
      args = {:keys=>Rdio::keys(objs)}
      return_object type,method,args,true
    end
Add tracks or playlists to the current user's collection.