Is there anybody that can help on ZUNE digital media player?

[Mainbrain64]

I am one of the few german users, having fun with my ZUNE media player.
By accident I deleted my music library on my Windows-PC, but the files are synchronized to my ZUNE player.
Though I haven´t used ZUNE in the past two years, my installation is not complete to download the ZUNE files back to my PC.

I used this link (http://forums.windowscentral.com/e?l...token=f8BK-qfk) to update the ZUNE Software and ZUNE detects nearly 30GB data, but tells me, no music files detected....
These music files can be played from ZUNE properly, but how can I download them to my PC.

Many thanks for your help in advance.
Sven

I am aware about the fact, that official support was ended in 2015...