I think I solved the problem...I hope it stays like this.
When I installed the drivers and the software I connected the usb cable to the pc (usb hub) but not to the kn7000.
Audio worked...but not songmanager.
So I disconnected the cable from the pc (from the hub)...the cable was still in the kn7000. I waited and then connected the cable again to the pc and it worked.
Maybe a stupid question now...
I mostly leave my computer on..day and night but I power off my kn7000.
When I power on the kn7000 will everything still work or do I have to disconnect the usb cable and connect again to the pc ?
I know it is a stupid question but I struggled several days with this usb problem.
Thanks again all ( all = Alec)