[Wintermute0110]

Ok Yes, I can download them all manually and put the in over "edit rom" but it is a very slow process... Moreover I am not sure how to import the metadata and where to get them for my Wii-Roms..

You can do that, but it is quicker to download the assets in a bunch and then place them in the appropriate directories. Then, in the Launcher context menu rescan for the assets and AEL will pick them up.

You have links for artwork download on the first post, check them out.

For the metadata currently you have to rely on the offline scraper (I know now is total crap for some platforms...) or export the NFO files, then edit the NFO files, then reimport the NFO files.