ditch your cable box, but can't bear to let go of that sweet, commercial-skipping DVR? If the folks behind PlayOn get their way, you won't have to. MediaMall launched the beta for PlayLater this week, a service it's calling "the world's first DVR for online video." The idea of a DVR for the internet sounds a little wonky at first, but it is an accurate description of the program's facilities -- pick a network (Netflix, Hulu, YouTube, etc.), a show, and an episode, and PlayLater downloads your selection to your computer's hard drive for belated enjoyment. Simple? Sure, but not without a catch -- anything PlayLater pulls down it wraps in a neat layer of DRM, locking that content to the PC that downloaded it. Time-shifting Hulu will set you back $5 a month, but beta testers (the first 5,000, at least) can score a free month just for trying it out. Hit the break for a press release and additional details.