GoldWave (32-bit) is a full-featured digital audio editor.
GoldWave features realtime amplitude, spectrum, and spectrogram oscilloscopes, intelligent large file editing, numerous effects (such as distortion, flange, doppler, echo, filter, mechanize, pan, offset, invert, resample, and transpose), and support for a wide variety of sound formats. GoldWave can open and play AU files found in Java applications and on Web pages. It can convert to and from many sound formats including AFC, AIFF, AU, MP3, VOC, WAV and SND, and binary data. It can extract audio from video files (including MOV, AVI, MPG and ASF).
Special effects such as Doppler, distortion, echo, flange, and transpose can alter and enhance your audio files to create new and unique sounds. It can also extract songs from audio CDs and save them to disk.
Limitations in downloadable version:
You can execute up to 150 commands each time you run GoldWave.