Problems with playing movieclips? This package is
all the you will ever need (including realmedia and quicktime files). K-Lite Codec Pack is a collection of codecs and related tools. The K-Lite Codec Pack is designed as a user-friendly solution for playing all your movie files. With the K-Lite Codec Pack you should be able to play all the popular movie formats and even some rare formats. This package is mainly for power users and people who do their own encodings.
Winamp is one of the most popular player around, for playing mp3-files. But Winamp supports also many other filetypes, both audio and video. With Winamp you can also change the look of your player (skin), and use plug-ins. This is a great player.