MediaMall Technologies, owner of PlayOn, media server software for streamingvideo content, has announced the availability of its new PlayCast channel in the Roku channel store. PlayCast allows users to send any video from a PC browser to a Roku-connected TV, much like Google’s Chromecast service. When used with PlayOn, PlayCast gives users the ability to cast videos from an Internet browser. PlayCast is available in the Roku channel store, and PlayOn, which can be accessed through subscription, is available in monthly, annual and lifetime payment options, starting at $9 per month….