TODO.txt

Mixer Element:
  - 

Show an animation when a job is created
  - more visual ? cog from the center of the screen to the far right-bottom ?

Treeview:
  - When moving a file, the search is done again completely instead of just updating the counters

Worker UI
  - Let the user cancel jobs.
  - Global progression of the worker in the main window.

Import of the music file to the database:
  - Assistant ?
  - From Youtube or other streaming websites ?

Global keyboard shortcut that show a command-window like sublimetext, even if the app is minimized ?

Portable version

Librosa turns out to be very slow to do what I want, maybe translate the loop detection algorithm in essentia/yaafe ?
  - http://essentia.upf.edu/documentation/
  - http://yaafe.sourceforge.net/manual.html
  - https://www.ntnu.edu/documents/1001201110/1266017954/DAFx-15_submission_43_v2.pdf (essentia/yaafe 26x faster than librosa ?)