Dear Asset UPnP Community

I have some trouble with M3U-Files. For some reason Asset 6 UPnP cannot play tracks in that playlist with umlauts (, , ) and special characters.

*EXTINF:322,Here She Comes Again (ft. Jamie Irrepressible) - Ryksopp
/share/musik/Ryksopp/Ryksopp - The Inevitable End (2014)/08. here she comes again (ft. jamie irrepressible).mp3

Strangely it is no problem to play the same track / the same artist via Asset 6 UPnP menu.

I can reproduce this behavior on two different devices (receivers from Pioneer an Yamaha). I stream my music from a NAS (QNAP TS-419P II).
I already tried to replace all umlauts via converter ( - no change for the better.

So what's wrong on my playlist?

Best Regards,