Go to studio.odeo.com and click "Sign Up Now"

Once you've signed in click on the "Record New Audio" link.

This will bring you to the recording page and will pop-up a little dialog asking for permission for the flash player to access your microphone and speakers. Click "Ok". Then plug a microphone into your computer, click "Record", and start recording. When you're done click "Stop".

Click "Save Recording" and, once it has saved, you will be able to add a title and a description.

Once you've saved the title and description you will find a code snippet at the bottom of the page along with a link to a number of different style players. You can use any of these players in a location description or map description by just copying and pasting them in.

Important: You need to remove the line: wmode="transparent" from the code snippet or it will not work properly on Firefox.

This is what you get -->

Check it out on this sample map