http://www.podtrac.com/pts/redirect.mp3/media.blubrry.com/geekactually/geekactually.com/wp-content/comicpodcast/BehindThePanelsIssue48.mp3Podcast: Play in new window | DownloadIn this issue, prepare for Oz Comic-con! Plus, a legend leaves Green Lantern, and Marvel sends us to Infinity and beyond…for free! DC cancels more, and more Arkham Asylum on the way. THEN Guardians of the Galaxy casting, and a whole mess of TV news from The Walking Dead, …