current playlist query

I have a directory with 467 songs in which shows all songs ok in the left hand side of LMS when I click on the directory name but when I click on the "Play" symbol to play all songs within this directory it only shows 100 in the right hand side music player view.

Does anyone know what I need to do to be able to play all the 467 songs in that directory? I assume it must be a setting I have missed but cant find it anywhere.

I am using Windows LMS Ver:Logitech Media Server Version: 7.7.3 - 1375965195

Thanks for any help