Post this on the Vegas Scripting forum. http://www.sonycreativesoftware.com/forums/ShowTopics.asp?ForumID=21
Maybe someone has a script or can write one.
It wasn't didn't stated whether the 'chapters' would start at the same timeline place or in sequence. For the latter, why have so many separate tracks where multiple events would work on one or two tracks? The events already have the file name (if displayed) or can be custom named.
Do you need to name the tracks to the file name? You can always find the file name of an event on the timeline by right-click and selecting properties.