This is an early early version
Download the plugin, place the folder in your wordpress plugin folder and activate the plugin in the adminsystem.
Start write a new or edit an old post. Above the edit content area beside the upload/insert you know see a tuneset link.
click on that, now a box opens with an input field. Open a new window in your browser go to tuneset.com and get or creata a playlist. Press save and copy the url. Go back to the wordpress and paste the url into the inputfield and press the link embedd. Finished. Publish your post and you will see a tuneset playlist there