EncSpot is a freeware application that will guess which encoder your mp3 files were encoded with as well as displaying other information. It also reports on the files' quality and displays a bitrate histogram for VBR files. It uses a familiar Explorer user interface.
Full Specifications
What's new in version 2
General
ReleaseNovember 8, 2008
Date AddedFebruary 6, 2007
Version2
Operating Systems
Operating SystemsWindows 95, Windows 2000, Windows 98, Windows, Windows XP, Windows NT