mhWaveEdit

MhWaveEdit can play and edit sound files like .wav, .mp3, .ogg. It is intended to be user-friendly and robust. It does not require a fast computer. It supports effects like: fade in/out, Normalize, Volume adjust/fade, convert sample rate, convert sample format, byte swap, mix to mono, add channel, map channels, combine channels, speed adjustment, pipe through program.

Features:

• Loads, plays, records and saves wav, mp3, ogg files and a few other formats as well.
• If the file is small, it's loaded into memory. Otherwise, it's edited on disc.
• Cut, copy and paste.
• Combine two or more files into single mp3/wav/ogg
• Volume and speed adjustment
• Convert between sample rates, sample sizes, stereo and mono
• You can always undo, all the way back to the original state of the file (even when editing large files.)