Looking at the source code of several podcast feeds, the URL of the attachement seems to be inside the < guid > metatag. I guess that there should be some open specs about this somewhere. A podcast with support of itunes also has many specific meta tags like < itunes:author >, < itunes:keywords >, etc. but I don't use these ...

Hi Chris, this MD5-thing is a good idea an might be an alternative to my date-hacking (http://openkapow.com/forums/thread/16013.aspx). But without a GUI-Tag it does solve my current problem since I want to use the RSS-Feed directly in my reader without further parsing.   About the GUID-Tag: Yes, very often it is the URL since most Blogs ...

The items i put into my robot dont have a date-string. I would like to work around this problem by using the <guid>-tag for rss2.0 to give each item a unique id so my reader can understand which one it is. Unfortunatelly I cannot do this since the rss-model doesnt support the GUID-field. Can it be extendet? Regards  PS: See ...