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?

>>3
I concur. But it doesn't play .flv and .rm, which is what I'm looking for. In wikipedia there's an article about media players comparision, and they said that zoom player could those files with its all codecs. Bullshit.

>>2
The same thing I said about Zoom player goes to vlc. Tried, needs codecs for those files too (ok, I'm probably expecting too much of a standalone player to play Real Media, but damn, VLC couldn't even play Flash Video. It's not even close to how good you guys tell me it is).

Mplayer has been thus far the only that could play .flv without external codecs, but, as I said, you can't use the searchbar.