Album track sort problem

[HanR]

Hello, I bought this program because it supports squeezebox. This works fine (except that a visible play button would be nice) but now I encountered a problem for which I have not found a solution. Not by examining all menu items and context menus, and not by searching the forum threads.

I entered an album with many tracks and found out that the track order was not correct. I use numbering in my filenames, but perhaps that is not working.
Then I added numbering in front of the track titles, but that also didn't work out. When I use rescan those numbers even disappear for some track titles.
My question is: how is track ordering achieved and how can I correct the ordering in the database (without doing it by hand).
I looked everywhere, but I could not find it.

TIA, Han