Anyone know if it's possible to view and upload to Flickr photostreams in MarsEdit for Mac OS X?

I've tried inputting settings manually with both "Other Blogger-compatible" and "Other MetaWeblog-compatible" selected in Software drop-down of site edit window with no luck.

For RPC URL I've tried...

http://www.flickr.com/services/feeds/photos_public.gne?

feed://www.flickr.com/services/feeds/photos_public.gne?

If you've figured out how to make this work please let me know by posting a comment.