Hi Dusan,
I must admit that I also donŽt understand what youŽre talking about.
IŽll write what I understand :
1. You connected your Audy via USB to your PC. OK.
2. Then you inserted an USB-Stick into your Audya ? Why ?
You wonŽt have access to your stick, because youŽll only see "USB-Modus" on the Audyas screen.
???
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Greetings from East-Frisia ( Northern-Germany )