Hello,
Wich audio plugin can i use for my atahualpa site (www.mariskakoppe.nl)?
There are a few, but I can only embed them in a post or page. I want to place the audio 'thing' (sorry i am Dutch, don't know all the right words ) in my header.

Anyone please???

You should do a google search or look thru the plugins at wordpress.org and try some. Once you find one, you could add a new widget area to the header and then put the widget there.

If you dig in, you might be able to add one to a page, view the page and then locate the html that is setup for the audio and copy that into a text widget.