Carbon to QTKit value conversion question

Question

I am rewriting an application in Cocoa which was originally developed in Carbon. (It used Flash movies for custom interface elements, which QuickTime no longer allows, and Cocoa makes redoing the custom interface much easier, so this isn't as weird of a task as it may sound.)
One of the things this program has to do is read a file containing a series of numbers, and have QuickTime jump a movie to points represented by the numbers. (The app is multiply-deployed with different movies, so the numbers have to be editable by a non-programmer.) The "read a file containing a series of numbers" part is pretty simple, but I'm lost when trying to figure out what to do with the numbers once I've got 'em.
The old Carbon code (circa 2001) says:
Movie theMovie = <pre-loaded movie>;
long jumpValue = <value from file>;
TimeRecord theMovieTimeRecord;
GetMovieTime( theMovie, &theMovieTimeRecord );
theMovieTimeRecord.value.lo = jumpValue;
SetMovieTime( theMovie, &theMovieTimeRecord );
So the question is: if I have a QTMovie containing the movie, and an NSNumber containing the number that was in jumpValue, what is the fastest way to make Cocoa do the equivalent jump? (Or, better yet, convert it to a QTTime?)
And as a followup, is there any easy way to get a callback when a QTMovie reaches a particular QTTime?

Answer 1

I have an answer to the main question, which falls in the "duh" category: use the "quickTimeMovie" method on the QTMovie to get the Movie primitive, and then just use the code exactly as-is (or as-was). It functions perfectly well, so yay.
Given that I'm using a non-standard timing system, I suppose I'll have to use a kludgey workaround to watch for the movie reaching particular points. (For example, an NSTimer which calls a checking function several times per second to see how far the movie has gone. Not elegant, but there are worse things to do.)