The wiki lists these:

Short­cuts while win­dow has focus:

Ctrl+F Search a track inside the col­lec­tion
Ctrl+G Search a track inside the cur­rent playlist
Ctrl+O Open a file or a playlist
Ctrl+S Save cur­rent playlist
Alt+Ctrl+S Export cur­rent playlist
Ctrl+D Add/remove cur­rently high­lighted song to/from queue
Ctrl+M Open Queue Man­ager tab
Ctrl+T Cre­ate new playlist
Delete Remove track from playlist
Ctrl+L Clear cur­rent playlist
Ctrl+W Close cur­rent playlist
Ctrl+Q Close Exaile