WaveShop is a free, open-source audio editor for Windows XP/Vista/7. Unlike many similar apps, WaveShop is bit-perfect, meaning samples aren't altered unless they need to be. Editing a portion of an audio file only affects that portion; the rest of the file is untouched. Blocks of audio can be cut and pasted without changing their contents at all. This is especially useful for patching a finished master without corrupting its dither. Note that 64-bit Windows users are strongly encouraged to install the 64-bit version of WaveShop, because it can load bigger files and/or more files at once without running out of memory. Waveshop's features include: * Bit-perfect: samples aren't changed needlessly * Very fast: all processing is done in memory * 64-bit version can edit files exceeding 2GB * Supports most file formats including AAC/MP4, MP3, FLAC and Ogg/Vorbis * Clipboard: Copy/Cut/Paste/Insert/Delete * Unlimited undo * Normalize and/or fix DC offset * Amplify (boost/attenuate) * Fade in/out/custom, linear or logarithmic * Peak statistics * RMS statistics with histogram * Reversal and inversion * Find clipping with detailed report * Extract channels to mono files * Insert/delete/swap channels * Change audio format * Sample rate conversion * Generate audio w/ envelopes and modulation * Edit surround speaker assignments * Find zero crossing * Multiple Document Interface (MDI) * Multithreaded processing * Playback via DirectSound * Peak-hold meters with surround support * Real-time spectrum analyzer * Recording with no limit but disk space

Download and use it now: WaveShop