One of the most popular queries about blogs in WordPress.com is how to insert audio how to have a player in posts.
And the truth is that it is very simple, you just have to use the plugin installed on WordPress.com that, unfortunately, does not have a visual interface of use nor is there information on the Board of how to use it, as it is opaque for users. The plugin is and its use is very simple:
What you get is a really simple but practical Flash player with which your readers can play the inserted audio file.
Note : in the version of the plugin for WordPress.org (blogs hosted on your server) the syntax to show the player is different, this: