Follow these steps:
1- You need first to create a smartplaylist with your desired content:
2- then need to put this playlist as an item on your home (but invisible):
Select Customise Main Menu, under settings sub-menu
Then, select an empty space:
The Select "Replace This Menu With..." And choose your saved playlist
The put this menu invisible on "Show" option
3 - And then select as a widget:
Note that:
The covers will display as displayed on your playlist, maybe you need to tweak your playlist to show exactly as you need.
Cheers