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Audacity is free, open source software for recording and editing sounds. You can use Audacity to record live audio, convert tapes and records, edit sound files, change the speed or pitch of a recording and much more.

Audiodope is an audio editor. You can load and listen to music files of various formats such as wave, MP3, wma etc. You can also edit part or the whole stream with functions like copy, cut, paste, insert, delete. You may modify any part of the stream by applying audio effects and synthesize sound files.

Audio Editor Free is a all-in-one audio editor, converter, recorder, player, splitter and joiner.A full set of effects and editing features are included for professional sound production. When editing audio files you can copy, cut, paste and mix any portion of audio files. If required, you may add effects like Amplify, Fade In, Fade Out, Delay, Reverse, Noise Reduction, etc. MP3, WMA, WAV, OGG, VOX, RAW and many more audio formats are all supported for direct audio editing.

Spectro is a freeware audio file analyzer for windows. Currently capable of reading FLAC, APE, MP3 and WAV files. Spectro lets you view vital data about compressed audio files and creates a spectrogram of the wave data. This allows you to quickly and easily spot quality issues with a file and also look for transcodes.

AudioDroid : Audio Mix Studio is a sound & music recorder, editor and mixer. You can edit and mix MP3, MP4, WAV, AAC, OGG and AMR audio files and create ringtones, alarms, and notifications from them. AudioDroid allows you to add new tracks, mix the tracks and save the mixed audio file in mp3 format. You can record audio with your device microphone and mix the recorded audio file with other audio tracks. Just import your instrumental and then record your voice over it. You can make time shift on audio files and crop them. »

SoundEditor is a free sound editor used to edit, filter and modify sound files. It is an open source freeware with no limitation of usage or distribution. The aim is to equal or do better than current software standards. SoundEditor is under constant evolution. Get the last version visiting the Downloads section.