DeVicious, you are expressing exactly what I feel !
In one of my support/incident calls WD answered to to the topic
"Not having the Music-ID3 tags in albumplayback.xml (when libary turned off)":
It is a feature of the WD TV to only have this with the libary on turned , oh dear
I feel your pain Steffen,
I got the sorting order solved now for music, my original media play on the computer is itunes which has the neat setting "keep folder sorted" which means it creates folders for artists and their albums which means I don't really need the artist name in the mp3 file since i brought all my tags up to date. I used a program called tag scanner (essentially the same as mp3tag) and renamed all my files in one minutes like this %track% %Title%
now all my music is sorted by track sorting order due to the numbers in front of the title.