itunes 11

Since I've upgraded to iTunes 11 my iPod Classic 160gb get's syncronised with iRunes, but the iPod does not recognize my music as audio. It just shows it as "other". Anybody else experienced this? Quite annoying - have all 24.000 titles with me in the car and now I have none!!

Works when I sync to my iPhone, but there I have less capacity and it works perfect with the iPod permanently connected in the car.

Is there any solution/work around or are the apple guys working to solve this?