AmiloD, on 31 March 2010 - 05:54 PM, said:
I hope someone can fix it soon

Well the most likely way to get it fixed is to get someone to fix the mpcinfo app/dll which most of the code for MPC media spam comes from (the app in question being over five years old).
You could always try to get the MPC-HC guys to fix it... at least they have the code for it (mpcinfo) in their svn.
The issue itself is caused on vista and newer versions of Windows because Microsoft (in their great wisdom) moved the proxy/stub pairs for some of the interfaces in quartz.dll to proppage.dll (now the problem there is that proppage.dll does not come with windows nor is it redistributable, it is part of the SDK for windows, ie. no normal user is going to have it registered in their system).
Edit: Well the best way to get this feature back is to ask MPC-HC devs to make a proper API for accessing info about currently running MPC-HC instance. MPC-HC has one kind of an API but afaik it can not be used on the currently running instance.