Created attachment 342987 [details]
[1]

The default widths are suboptimal, so I need to resize all three main panes every time I start the application. These widths should be fixed and changes saved. I appended three examples:
1. The CD-Tag should be auto-sized, if e.g. „01/02“ is contained (until a certain maximum).
2. With other themes, more boxes are too small (Year, CD, CD-Tracks) and should be auto-expanded.
3. With default settings, the tree pane is far too wide, while the Tag pane should be auto-sized depending on the content (until a certain maximum). The main pane should eat up all remainung space. The tree pane should by default have the width of the file system tree and expand until a certain maximum if more folders are opened and the tree thus getting wider.