Editing artwork works almost the same way when using the Desktop UI but slightly differently so we go through an example here.
Select the folder and then Edit Song Metadata
Select Artwork Search and it will open Google Image search in your default browser, it is not possible to open Google Image search directly within SongKong applciation it has to run within a browser.
Drag the artwork from the tab and drop onto the SongKong Artwork window, we can drop anywhere on the window
Use Select All to select all songs and then Replace All to replace the artwork with the new artwork
On selecting Save the changes are saved and a report is created showing all the changes