WinMerge - WinMerge is an open source differencing and merging tool for Windows.
VLC Media Player - VLC is a free and open source cross-platform multimedia player and framework.
Meld - What is Meld? Meld is a visual diff and merge tool targeted at developers.
foobar2000 - An advanced freeware audio player for the Windows platform.
Beyond Compare - Beyond Compare allows you to compare files and folders.
Winamp - Winamp is a media player that allows users to play multiple-file formats, arrange media in a varied file-management system, and play unique media with AAC encoding.