VLC Media Player - VLC is a free and open source cross-platform multimedia player and framework.
NetTime - nettime is a time & attendance software solution.
AIMP - AIMP : Free Audio Player : Официальный сайт программы
Dimension 4 - The fastest and easiest way to synchronize your Windows clock.
foobar2000 - An advanced freeware audio player for the Windows platform.
Meinberg NTP - NTP client and server download for different operating systems.