Set ratings WITHIN QS

[Sporkubus]

Hi guys, I'm brand new to Quicksilver and it seems pretty cool. But I
am having one irritating problem. I know you can set the rating for a
song playing in Itunes using key bindings, but I ALWAYS end up having
conflicting key bindings so I'd rather avoid doing this. How can I use
an action on the currently playing track to set its rating?