How to add a skin to AIMP?
It's very easy to install SKINS for the AIMP player. You'll need a source for skins and the best way is through the official website. Access the Skins page, then select a skin and click on Download. Extract the archive's content and double click the AC3 file you see. AIMP will then launch and take you directly to the Skins Chooser page. Apply the skin and restart the player and that's it.
Skins page: http://www.aimp.ru/index.php?do=catalog&id=0