The Files are on a usb harddrive plugged in on Disk1 under the directory Name ‘Musik’.
The obvious difference between us is that I only have a single USB drive plugged into Disk2 while you have a USB Flash Disk in Disk2 and your music on a USB Drive in Disk1. My understanding is that you would need
chmod o+r -R /share/hdd/data/public/Musik and make sure the ‘Musik’ matches the case of the folder you create.
Then you need to edit the mt-daapd.conf file to change the information for the location of the ‘Musik’ folder, again taking care of the case. I think the default configuration file had the …/hdd/… so all you need to change is the ‘mp3’ to ‘Musik’.
Hope this helps and if I am wrong in my assumptions, hopefully someone more skilled in Linux will point it out. The good news is that I am really happy no longer having to dedicate a PC to stream music. And my wife is very happy which always helps!!!!!!