I had mentioned this plugin a while ago, but never released it. It’s a small plugin that makes it easy to insert single MP3 files directly into your posts via a little Flash player.

Basically, you just copy up and activate the plugin, the put the URL of the MP3 file inside of brackets (those are the square ones) in your post. When you do, you get this:

[http://www.asymptomatic.net/audio/Garden State - Let Go - Frou Frou.mp3]

You can download the plugin for WordPress, which makes it easy to insert this applet or any Flash applet into your posts, and the AsySound Flash Applet over at the hacks page.