Yes, of course: download the version of FocusTrack you need (Mac OS X or Windows) from the downloads page. When you're asked for a name and registration code enter 'Demo' and 'Demo'. This will let you try FocusTrack, with a few features disabled, for fourteen days.
The download version of FocusTrack even includes a 'mini-show', highlights from the recent UK tour of My Fair Lady, to give you something to play with; don't forget to download the focus photographs that accompany this showfile, also from the downloads page.
Or read about how FocusTrack can help you on your show.