How to add the Bit Rate column to Windows Explorer Detail View (for music files) and making it "stick". This article was tested with Windows 7, 8, and Windows 10.
Opening an MP3 music folder with Windows Explorer shows the Name, Track, Title, Contributing Artist and Album name, but not the Bit Rate. Manually adding the bit rate for one folder may work for one folder but not for others.
1. Launch Windows File Explorer.
2. Open your top-level music album folder (mp3 folder).
In my case, C:\Data\Music
You may find yours in C:\Users\(your name)\Music
3. Windows 7 users: Expose the File Menu with these steps:
On the top menu bar, click "Organize," Layout, and check "Menu Bar".
This exposes the File, Edit, View menus.
4. View the Details:
For Windows 7: On the newly-exposed menu, choose "View, Details"
For Windows 10, click the View tab in the ribbon bar, choose "Details"
5. In any Music/MP3 folder, locate the file/directory name's column-heading (the line with the Name, Date Modified, contributing artists, album, etc.).
Find a blank space on that column-heading section and "other-mouse-click" (right-mouse).
A list of fields will appear. It may help to maximize the screen and look to the right.
Windows 10 users may have to click "More"
Check [x] Bit Rate.
Note: This only takes effect for the current folder. Additional steps are needed for other folders....
Windows 7 Users (illustrated below):
Return to Windows Explorer's top menu, choose Tools, "Folder Options."
Windows 8 Users: Click Top-menu, View, "Options" (not illustrated, but similar steps)
Windows 10 Users:
From the Ribbon, Choose "Options", then "Change Folder and Search Options"
(not illustrated, but similar steps)
All versions of Windows, continue with these steps...
(in Tools, "Folder Options" / Options)
Click the View tab
Click "Apply to Folders", then OK, closing the dialog.
The Bit-Rate should appear on all music folders and subfolders.