Can't Select Tracks in Sub Folders

[modos]

Describe the bug
cannot select tracks that are in sub folders, the browser modal only shows audio files and no other folders

To Reproduce
Steps to reproduce the behavior:

1. Click on the 'Import Tracks' button in index page
2. Try to select tracks that are in sub folders of another folder

Expected behavior
can move forward to sub folders to select tracks

Screenshots

Desktop (please complete the following information):

• OS: All OSs
• All Browsers
• All Versions

Smartphone (please complete the following information):

• Device: All Devices
• OS: All iOS versions
• Browser all browsers
• Version all versions

Additional context
Add any other context about the problem here.