From another post here about something else...
I discovered a search term that was used, modifying this "search" term too look for "swf" sound files also happens to pull up sites and the "swf" folders where flash games are stored.
Your taken to a default directory tree
- to play these games simply click the link
- to download, right click and "save as"
Simply find a game you like, and download it to use on your site; if you like adding regular flash games.