Fixes:

1. Choose cover button didn't hide when file is created.

2. Choose file type button didn't say "File Type" when create file menu is closed.

3. Dock was off centered by only a few pixels.

4. Hide widget button doesn't hide when Music Player is closed.

5. Playing new audio even if paused, doesn't reset the widget pause button.

6. Closing Music player doesn't hide the hide widget button.