Ctrl+Tab - switch between File Manager and Music Player.
Ctrl+Shift+Z (global) - capture a screenshot (full screen).
Ctrl+Shift+A (global) - capture a screenshot (active window).
F1 - open Settings.
F3 - search.
ESC - close Image Viewer or clear search boxes.
You can close the program without confirmation with Right Mouse Button or Wheel Click
Music Player (global):
Ctrl+1 = play/pause.
Ctrl+2 = stop playback and free the file.
Ctrl+3 = play previous file.
Ctrl+4 = play next file.
Ctrl+Plus/Minus = change volume.
In Playlist, you can use Right Mouse Button or Wheel Click to quickly open folders in File Manager.
You can click on favorite folders and path folders with different mouse buttons to quickly sort your files:
Left Mouse Button (or F5) = sort files by name/default sorting/refresh folder.
Wheel Click (or Ctrl+Q) = sort files by size.
Right Mouse Button (or Ctrl+W) = sort files by date.
Space - select current file.
Right Mouse Button - select/unselect current file.
Ctrl+A - select all files.
You can search for multiple terms by using the multi-line search box.
1 - default image viewer size.
2 - fullscreen mode (info panel).
3 - true fullscreen mode (no info panel).
a - fit image to screen/show unscaled image (toggle)
q, w - show previous/next image (also Mouse Wheel).
Space - select current image (for renaming, deletion, etc).