VLC Media Player - VLC is a free and open source cross-platform multimedia player and framework.
Adobe Acrobat DC - Make your job easier with Adobe Acrobat DC, the trusted PDF creator. Use Acrobat to convert, edit and sign PDF files at your desk or on the go.
AIMP - AIMP : Free Audio Player : Официальный сайт программы
Sumatra PDF - Sumatra PDF is a slim PDF/DjVu/EPUB/XPS/CHM/CBR/CBZ/MOBI viewer for Windows.
foobar2000 - An advanced freeware audio player for the Windows platform.
Wondershare PDFelement - All-in-one PDF editor