MP3Gain analyzes and losslessly adjusts mp3 files to a specified target volume.
It does not simply do peak amplitude normalization. Instead, it performs statistical analysis to determine how loud the file actually sounds to the human ear.
AMaMP (Audio Mixing & Manipulation Project) aims to provide a cross platform core program that, based on an input instruction file, mixes and manipulates audio from a range of sources. The project incorporates GUI apps that target the core.
A virtual synthesizer. Also contains a beat box tool, modulation tool (to make the sound less perfect, more real), stream to disk recording, real-time effects and response. Allows you to associate samples with keys and then tap out a beat.
Mr. DJ is a program to mix several audiofiles. You can use it as a personal studio. It's programmed in VB, uses Windows Media Player (behind the dashboard) and has a familiar Windows Interface.