How do I embed a webplayer in a site?

If you are using wordpress so here is a tutorial to do it without any plugin needs :) Tutorial

you can use embed / object tags to embed it. the manual has a page specific for it. the automaticly generated code by the web player build is a good example with all needed javascript. you can copy it and change the value of the properties that you need to change and then use it in your server side scripts or static pages. if you search the internet you might find joomla modules for it too. there is a wordpress plugin for it in unity's website.