Player for Rainwave is a software application for streaming video game music, mainly sourced from user contributions. It is designed for chiptune enthusiasts and offers features such as streaming and listening to music, real-time updates on songs, favoriting and rating songs, and voting for the next song. Users can also access a song library, manage request queue, and use the app on Android Auto and Cast. It also supports Android/Google TV with limited features. Users need to be logged in to rate songs, vote, request songs, and manage their queue.