[Feature request] Move output device selection to a dedicated toolbar button

[kode54]

Describe

Also thought that maybe the output device should be moved from the settings into a dedicated button (like in iTunes)? It's not very convenient to go into settings each time you want to change the output.

To Reproduce (delete if not applicable) Steps to reproduce the behavior:

1. Go to 'main window'
2. Open Preferences
3. Select Output tab

or

1. Click dedicated 'output' button on main window

Expected behavior Should be able to quickly switch outputs, apparently.

Version information:*

• macOS version: 10.13.6
• Cog version: 1528

Additional context User continues to email me directly rather than interact with the bug tracker.