That is where Miro comes in. Miro is an open-source video player that not only organizes your local media, but also handles podcast subscriptions, browsing youtube, bittorrent downloads, and handles all the formats you need, such as wmv, quicktime, h.264, avi, mpeg, divx, and xvid, and in full HD if available.
Podcasts are probably one of the most useful features of this program. It stores all of your subscriptions and list them by category. It will automatically download new episodes if you choose, and you can play it right there in the program. Once your done watching them, feel free to store them, or delete them right away with those options right in the UI.
I've been using Miro, previously Democracy Player, for a good number of months, and while it is still in beta, they are slowly fixing the bugs and making it better with each release. If you need a bit of organization, and iTunes is not your thing, then try this program out and see how easy it is.
