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?

>>4
If VLC doesn't include the codecs you want, just recompile it to include them.  (I don't think ffmpeg, which is what VLC uses for FLV, supports seeking in FLV streams either)