It’s known that WordPress won’t allow users to post flash content on their platform, unless they host their blogs elsewhere. However, there are a few exceptions; WordPress allows you to post *some* flash content, things like YouTube or DailyMotion videos.
What I’ve discovered is that WordPress allows you to post many other kinds of flash content on your blog.wordpress.com blog, including SnackTools widgets like banners and music playlists. You only need Gigya.
Read more here.