Standalone media player

By standalone I mean no need to install codecs/filters and, if possible, the player doesn't have to be installed either (comes in a zipped package).
I'm running WinXP. Tried so far:
->mplayer (pretty decent, but .flv and .rm/.rmvb files don't allow use of the searchbar - or am I doing it wrong?)
->zoomplayer (looked promising; indeed a good player, but DOES need the codecs installed).

Suggestions?

Nocodecsplayer is a good idea because codecs are a mess ATM, but I have a dream: to one day have codecs behave as simple fucking DLL files as they should be with fucking INI files you place anywhere and no sight of the Windows Registry or Windows controls piece of shit, so that you just copy your codecs with their INI files near a properly coded player EXE (or somewhere in the PATH) and they become available. Everything should work like this, but Microsoft and other developers decided to make it enterprise and scalable.