All I can say is that UKMP loaded and scanned the files, when I selected an Album/Track it froze, locked up the device and required a reboot.

Kagu began by scanning the files and, when finished, closed itself down.

I am very sorry but I know nothing about xterm, it is not installed on my device. I assume it is a console but I never type cli instructions.

Having said that, however, if my experience is helpful to you in resolving the issues then I shall give it a shot and report back the results you request. A word of warning, I do need serious handholding in order to do so.