google play music help

[xXBLACKBERRYXx5]

i noticed with the normal music app when u have shuffle on itll go through all the available songs then itll throw the songs from the previous list of songs and mix them up again and you have a chance of hearing the song again. but with google play music i noticed itll play songs a alot in one go.. for example.. say you have 100 or so songs cached and u select "show offline music only then hit shuffle. itll shuffle the songs.. but itll play the same songs over and over some times making it somewhat annoying.. anyone know how to fix that so that you wont hear the same song until the list has cycled all the way through?