Feature Request: RSS Enclosure and the rel property

Ok, I’ve only been using it for days but I’m already speechless with how well wordpress works! Nice job folks.

Now, on to my feature request. Instead of having all links to audio or video that are in a post automagically transformed into enclosures for the rss2.0 feed how about only those links with a “rel=”enclosure” property.

I’ve looked at the code and I think I can almost see where to add this, I think the right place is in wp-includes/functions.php in the do_enclose function. But I don’t know php at all so I’m not sure how to add that.