Here is a simple now Skype Now playing plugin I created for MusicBee using C#.
The plugin uses the Skype4COM ActiveX to communicate with skype. Before 5.5 Skype4COM was part of the Extras Manager distributed along with Skype. In 5.5 The extras manager was removed so now if Skype4COM is not installed in your system you have to install it through the provided Skype4COM.msi.
If you have previously installed Skype4COM then this step is not required.
The tags supported at the moment are <Artist>, <AlbumArtist>, <Title>, <Year> and <Album> and they have to be like above in the textbox in order for the tag to get displayed. Also there is the option (activated by default) for a "Now Playing" string and a Unicode note char to appear in front of the selected pattern. (Depending on the computer the note may appear as a square).
There are installation info inside the archive.
Here is the original version: http://www.mediafire.com/?cwc5jmx6s1cx49t
Here is the latest v220.127.116.11: http://www.mediafire.com/?v9lj0clf4acf25a
(the skype4com.msi is provided along with the application archive)
Also thanks to Mikey helping me to sort out the issues with v18.104.22.168
The sources can be found on Github https://github.com/kelsos/mb-skype-plugin
It is possible that Skype4COM.msi will resolve the connectivity problems reported also with the previous version.