In the Music Library you can set labels for each file (click via RMB -> Labels, or click via RMB in Labels column). You can use labels for sorting / grouping files by custom parametersPress the CTRL key while scroll the content via mouse wheel to increase scrolling speed.To switch off sorting by the column click on it header few times (while sorting arrow is visible)To refresh content of the music library table use the F5 keyboard key.To change scale of thumbnails in Album Thumbnails view of music library table use the mouse wheel with pressed CTRL key.In the Music Library and Tag Editor you can sort the table by multiple columns: to do this just click on column with pressed CTRL key.
For group files by specified tag field just click on its value with pressed Ctrl key:
Incremental search is available for each drop down list in Music Library and Tag Editor:
To apply best fit to column - double click on separator between the column and next neighbor. To apply best fit to all columns - press the CTRL+"Num+" hotkey