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Acoustica, an audio editor for Windows 9x/NT.

Provides multitrack recording, editing and mixing on the PC. Demo available.

Free, fully-functional multi-track audio editor for Windows (98 and later), Macintosh (MacOS and OSX), and Linux.

Mixing and editing tools for PowerPC and also Windows PC platforms.

BCX and BRIAN editing and playout software for radio stations.

Makers of Melodyne, a program that lets you edit audio soundwaves in a piano-roll interface.

Visually play, record, edit or convert most sound file formats. Add special effects and apply filters.

Multiple Document Interface for editing dozens of waves in one session. Realtime oscilloscopes.

[Win] Sound editing application, record, process, and save sound or music files. Product specifications, screenshots, tutorial, FAQs, and downloads.

WAV file editor that offers many effects and functions. Freeware.