WTH does the Universal Media Player not accept certain attributes?

I am trying to combine my media players into one cohesive controller - I would like it to have all the attributes that the other media_players do - such as media_title for example.

It appears that the current universal media player doesn’t support this?

I think I should have the ability to name and create any attribute I like in this template media player. At the very least, it should support all the attributes that other players use.