Audacity is free, open source software for recording and editing sounds. It is available for Mac OS X, Microsoft Windows, GNU/Linux, and other operating systems

Interface:
* Note Track now supports export as a MIDI file
* Linked audio and label tracks: improved support when source
and target number of tracks differ and when cross-pasting
different track types

Import / Export:
* On-demand now supports project saving during summarising;
reverts to stripey background; fixed some crashes due to
threading issues
* Exports: Single AAC filter (M4A LC profile) with quality
settings slider; removed FFmpeg formats already supported
by Audacity; added explicit GSM 6.10 (WAV) filter; current
project rate now used for all exports, with check for
format-invalid rates; improvements to metadata support

Effects:
* LV2 plug-ins: added support (OS X and Linux only) for using
synths as tone generators, scale point labels, grouped
controls and i18n translations
 

Program Information Category: Multimedia Type: Free Version: 1.3.6 RC1 Size: 4MB Works on: Windows Product page: here