VLC Media Player - VLC is a free and open source cross-platform multimedia player and framework.
grepWin - grepWin is a simple search and replace tool which can use PCRE regular expressions to search for...
foobar2000 - An advanced freeware audio player for the Windows platform.
PowerGREP - Quickly search through large numbers of files on your PC or network using powerful text patterns to find exactly the information you want. Search and replace with plain text or regular expressions to maintain web sites, source code, reports, ...
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.
dnGREP - dnGrep allows you to search across files with easy-to-read results.