How to install the skin

View > Skins > Add Skin > choose the desired .xmlc file

Or you can simply put the skins into:
C:\Users\%username%\AppData\Roaming\MusicBee\Skins

For the player centered skin, keep the Album Cover enabled in the main player, since the player controls and progress bar position is depended on it to stay centered.

To enable main player auto-color:
Right Click over the Main Player > Panel Layout > Auto-Pick Panel Colors

To customize the track details you want to show on the bottom left corner-

1. Select default MusicBee 3 theme (some theme can disable this customization feature)
2. Right Click over Main Player
3. Panel Layout > Customize... > Create desired settings.

If you want, you can install the font Outfit and enable it from:
Edit > Edit Preferences > Layout - choose Fonts here.

To get the setup like the screenshot attached:

1. Put the " SLICK View.xml " into
   C:\Program Files (x86)\MusicBee\Plugins\TheaterMode.Embeded\

2. Restart MusicBee

3. Click > Configure Layout Icon > Main Panel > Theater Mode > SLICK View