Airlist Minimum Playlist Lengths

I have been recently thinking about purchasing Airlist. However, does anyone know if you can shorten the length of a playlist that Airlist creates?

I think that Airlist makes playlists for 60minutes minimum. Is there anyway i can alter this to say - create a playlist for 25mins or whatever length of my choice....

Please help!!! I use Raduga for school radio and require Airlist to create playlists for break times and lunch times only.

If anyone out there can advise me or create a file that would do the trick then i would be extremley gratful.

Look forward to reading your posts...