If you have Windows Media Player, you can play Windows Media streams. If you install Real Player or Real Player Alternative, you will be able to play Real streams. If you install QuickTime, you will be able to play QuickTime streams.

If you install Flash Player, you can then use players like FlowPlayer to play content from streaming server.

FlowPlayer can be sent from your server. WMP, Real Player / Real Alternative, QuickTime, Flash Player are installed on the user's computer.