Add "Chapter {track-1}" to Title?

I'm trying to give correct chapter names to some MP3s. When the chapter matches the track, I can set the file name to "Chapter {track}" and then thefile name to the Title. But a lot of the time the chapter is offset by 1. So track 1 is chapter 0, track 2 is chapter 1 etc.. Is there a way to use {track-1}, or something similar? Or a better way of changing the Title than I'm using?

Thanks!