After I installed an Asus Xonar DX soundcard, I experience that the music from Spotify/iTunes stutter when Skype plays notification alerts. This never happend with my integrated soundcard (which I've uninstalled and disabled).
I tried to install the latest driver when I installed the card, but am not really sure if I succeeded. The setup.exe failed, so I had to update the driver to latest manually (which should work fine).
Any idea how to fix this? Ask for more info if needed