def load(*args)
      super(*args)
      self.id = self.uri.split('/').last if self.id.nil? and defined? self.uri
    end
def load(*args)
      super(*args)
      self.id = self.uri.split('/').last if self.id.nil? and defined? self.uri
    end
TODO remove when soundcloud api is fixed
 if self has no id, try extracting from uri