Western Digital must not want to leave casual TV gaming to the Roku crowd. Our friends at the FCC have just posted a filing that shows the as yet unannounced WD TV Play taking on its set-top rival with a dedicated gaming channel. We're only given a small peek into the new media hub's gaming universe through the pre-release user manual, but we know that a Texas Hold'em variant and other titles will find their way in through the gaming services Funspot and PlayJam. No sig