RealPlayer is a media player that is used primarily to stream music and video files over the Internet. RealPlayer files, however, can be saved and will contain several file extensions, including .rm, .ra, .rv. One setback of RealPlayer files is that they can only be played on the RealPlayer application. On the other hand, Windows Media files can be played on a variety of media players. RealPlayer files can be converted into Windows Media files using a web-based application.
