Audacity

• Audacity® is free, open source, cross-platform software for recording and editing sounds.

Clementine

• Clementine is a multiplatform music player. It is inspired by Amarok, focusing on a fast and easy-to-use interface for searching and playing your music.

• Listen to internet radio from Spotify, Last.fm, SomaFM, Magnatune, Jamendo, RadioTunes and Icecast.

• MediaPortal turns your PC into a very advanced media center, or Home Theater PC

• MPC-HC is an extremely light-weight media player for Windows.
  The player supports all common video and audio file formats.

RealPlayer

• One-click video download. The easiest way to download & convert video or music in any format. Download to your PC and transfer to 100+ other devices.

VLC Media Player

• VLC is a free and open source cross-platform multimedia player and framework that plays most multimedia files as well as DVD, Audio CD, VCD, and various streaming protocols.

WinAmp

• The free customizable Winamp media player that plays mp3 other audio files, syncs your iPod, subscribes to Podcasts and more.

• Windows Media Player is available for the Windows and Windows Phone operating systems. Use this table to find the right Player version for your system. (If you've got a Mac, you can download Windows Media Components for QuickTime to play Windows Media files.)