bill - 2:31 am on Aug 28, 2009 (gmt 0)

I'm not familiar with that tool. It does look like it has a lot of feature options that would let you fine tune your feed though.

Why not take the validator's advice and address the MIME type issue?

Another option might be to generate an Atom feed instead of RSS with the same tool. When I hand code I use RSS by habit, but if I have a tool that will generate a feed for me I'll often go with Atom. It has a bit more functionality available compared to RSS.