VLC Media Player - VLC is a free and open source cross-platform multimedia player and framework.
Truecaller - Find a person by a name or phone number worldwide for free using Truecaller.
AIMP - AIMP : Free Audio Player : Официальный сайт программы
CallApp - Free Caller ID & Call Blocker app that allows mobile users to block phone calls, identify calls, blacklist unwanted callers and much more.
foobar2000 - An advanced freeware audio player for the Windows platform.
CallerSmart - CallerSmart is an application that is basically used for the purpose of looking up mystery phone numbers for free.