DDJ RZ Driver version 1.03...no output on Media Player and YouTube

Hi everyone.

I´ve a big problem since the driver for the DDJ RZ got an update to version1.03. Since i no longer use headphones for games, media player or YouTube, i decided to use the RZ as external Soundcard. 

In version 1.0 it worked very well. But 1-2 weeks ago i got an message by starting up Rekordbox, that new drivers would be available for my controller. So i updatet to 1.03.

If i want to play a set on YouTube, Soundcloud or other portals, no sound can be heared, Therefore i can use Rekoprdbox as usual. If i downgrade to 1.0, i have sound with Media Player, Soundcloud and so on, but Rekordbox still doesn´t work. I get message, that new drivers were available and if do not update, the sound output might not work on Rekordbox. And it does not. Therefore the sound comes out from my onboard soundchip. But no headphones, speakers or AVR is connected to it. DDJ RZ is shown as standard. If i click on test configuration in sound options, i get a message, that the RZ is used by another application. But no other application is running. 

Dear Pioneer, tell me what you´ve done?!

My system:

Intel i7 4770k

8 GB Ram

Windows 10 Pro