what media media player is available for free
VLC Media Player ( Windows, Mac, Android, iOS) is the best choice because it supports the widest variety of media types, it's available on the widest number of platforms, it still gets regular updates (despite debuting way back in 2001), and it's free and open source.
In that case, look to AIMP, which has surpassed WinAmp as the top app for playing and organizing audio files. AIMP celebrated its tenth anniversary in 2016, so it's a proven piece of software, and it's free. As with WinAmp, you can download a variety of skins to personalize the interface.