Hi Herr Stamper,
I have solved my problem, maybe this works for you too:
(I have the Dutch version of iTunes so I will try to translate the steps for you)
Go to 'edit'
then click 'preferences'
then click the tab 'play'
then go to 'play audio via'
And switch from 'direct sound' to 'windows audio session'
Bye, Bram Grooten