It is important to note you should be migrating away from itmsdav.apple.com and onto feeds.itunes.apple.com as soon as possible. While you may still be able to access the itmsdav.apple.com server until August 15, 2010 we will no longer guarantee it's uptime. Going forward we will only support the new feeds.itunes.apple.com. Your original credentials will continue to work on both.

Please also note the recent upgrades that have been made in regards to the feeds which include 30 second previews, popularity table, a new file format (.tbz found at http://feeds.itunes.apple.com/feeds/epf/v3/full/), source code for an importer tool (EPFImporter) and the addition of the EPF-Flat files as well as the upgrade to the new server.