Windows 7: Media player shows on network

Hey all, I am wondering if I am missing something here, I have to my knowledge turned off all media streaming capability but yet when I am listening to tunes in the office I have noticed that there is an icon for my office pc's media player on the network. I have turned off the functionality in advanced sharing and it is not turned on in wmp. Is this just the way it is now? Seems like this should be able to be overridden, virtually every guest in my house has access to my htpc and I don't necessarily want them to have access to my office pc's media.

Click on the Start Orb and type "sharing" and select "Manage advanced sharing settings". From there, turn off anything that seems to be media-related.