This one has be baffled. I subscribe to a lot of podcasts and don't have the time to listen to them all every week. They fill up my hard drive really fast. I would like to set iTunes to only keep the most recent two podcasts so I don't have to go in and manually remove old episodes for 20 different podcasts. I thought that this feature was included in earlier versions of iTunes but I can't seem to find it on iTunes 8.