Software: Audacity (Open Source Sound Editor)

Audacity is a free, open source multi-track audio editor and recorder, for recording and editing sounds. Features include envelope editing, mixing, built-in effects and plug-ins, all with unlimited undo.

Below is a brief list of features:

• Record live audio.
• Convert tapes and records into digital recordings or CDs.
• Edit Ogg Vorbis, MP3, WAV or AIFF sound files.
• Cut, copy, splice or mix sounds together.
• Change the speed or pitch of a recording.
• And more (see the complete list of features).