The JISC Steeple project, a collaboration across the podcasting services at Oxford,Cambridge and the Open University (with partners at more than 10 other HEs) also maintains a number of wiki pages discussing the technical areas of encoding and metadata. The Steeple wiki has examples and documentation on general podcasting, iTunesU and examples of aggregation of material across 4 HE institutions. There are also many indispensible handbooks written by the teams at the three institutions including handbooks on institutional change, policy and processes and technical encoding specifications.
There are also many great documents on the Steeple wiki relating to feeds, licences and Open Content. The following link shows for instance some of the RSS and syndication related pages..
JISC Steeple project home site ( Enterprise podcasting including talks from Oxford,Cambridge,Open and 15+ HEs)
JISC Steeple project wiki and mail list