I use an iframe. The code looks like this.
<iframe src="http://revolutionimages.net/GDA/index.html" style="border:0px #FFFFFF none;" name="myiFrame" scrolling="no" frameborder="0" marginheight="0px" marginwidth="0px" height="600px" width="800px"></iframe>
The src= is where the pano is hosted. Adjust the size using height= & width=
In Muse...Go to File>Insert HTML>then place your iframe in the dialog box.
I use http://7thspace.com/webmaster_tools/ifr ... rator.html
to generate my iframe code.
It seems that you must upload the PTP project folder to your server in order for the iframe to work. It doesn't reference a project on a local level, in my experience.
Hope this helps.