Volume Concierge 2 is a free Windows utility for controlling your PC's volume It automatically schedules your system's sound by the rules you set.
License: Freeware
OS Support: WinXP, Win2000, Win Vista

A professional digital audio player, editor, converter, recorder, and analyzer It includes many effects, such as equalizers, noise reduction, and time warp.
License: Freeware
OS Support: WinXP, Win2000, Win Vista

The alphaSXplayer is a FREE, powerful iOS application for recording and playing.
License: Shareware
OS Support: Mac Other

Equalizer APO is an open-source parametric equalizer for Windows Compared to similar audio equalizers, APO is lightweight and easy to use.
License: Freeware
OS Support: WinXP, Win2003, Win2000, Win Vista