Jumping to a frame using XML

Hey there, I’m adapting this iTunes coverflow style gallery for my own purpose

http://www.weberdesignlabs.com/blog/?p=11

Basically, the locations of the artwork and the URLs for when you click on a picture are stored in an XML file.

Is it possible to adapt the AS or XML so that instead of opening a URL, clicking on a cover jumps to a particular frame on the timeline?
Basically what I want to do is have the first and last items acting as ‘previous’ and ‘next’ buttons to go to a different frame on the timeline.
I guess what i need to do is get the actionscript to do whatever is within and replacing that with the action I want it to perform?