GoldWave 5.23

Multiple Document Interface for working with many files in one session
Huge file editing: 4GB and beyond (NTFS only)
Configurable RAM or hard drive editing
High quality: 24 bit, 192kHz
Real-time visuals: bar, waveform, spectrogram, spectrum, level meter, ...
Fast non-destructive editing. Cut, copy, delete, and undo take only a fraction of a second, regardless of the file size
Multiple undo levels
Many effects: distortion, doppler, echo, filter, mechanize, offset, pan, volume shaping, invert, resample, equalizer, time warp, pitch, reverb, volume matcher, channel mixer, ...
Effect previewing and presets


Audio restoration filters: noise reduction, pop/click, smoother
Supported file formats: wav, mp3, ogg, aiff, au, vox, mat, snd, voc, FLAC, raw binary data, text data, and more
File format plug-ins for the next generation of audio compression, such as WMA and MP4/M4A
DirectX Audio Plug-in hosting
Effect chain editor
Audio CD Reader
Batch processing and conversion
Drag-and-drop cue points, with auto-cue and file splitting features.
Direct waveform editing with the mouse
Customizable tool bars
Customizable waveform colours
Customizable keyboard shortcuts
Automatic timer (day/time) recording or level activated recording
Clean, friendly, easy-to-use interface
Several built-in accessibility features and many keyboard shortcuts
Excellent value, free upgrades