I was quite surprised after MB 2.1 reinstallation that there is no 'Desktop' and 'Downloads' in the Left Sidebar.
There are Libraries and Hard Disks in the Computer node, but no 'Desktop' and 'Downloads'
IMHO, these folders are one of the most used places to store data (including some audio files) in Windows OSes.
You can find the shortcuts for Desktop and Downloads folders (alongside with Libraries and Hard Disks in the Left Sidebar of Windows Explorer in Windows 7, so adding the missing folders to the Left Sidebar of MB would be consistent with what an average Windows user expects to find there.
That would simplify the navigation with the Left Sidebar of MB and allow to find and listen to audio files quicker.
AFAIK, the folder names don't require translation (a default system name and path is used), so it could be updated before MB 2.1 final release if approved.