Audacity
Audacity is a free, easy-to-use, multi-track audio editor and recorder for Windows, Mac OS X, GNU/Linux and other operating systems.
You can use Audacity to:
You can use Audacity to:
- Record live audio.
- Record computer playback on any Windows Vista or later machine.
- Convert tapes and records into digital recordings or CDs.
- Edit WAV, AIFF, FLAC, MP2, MP3 or Ogg Vorbis sound files.
- AC3, M4A/M4R (AAC), WMA and other formats supported using optional libraries.Cut, copy, splice or mix sounds together.
- Numerous effects including change the speed or pitch of a recording.
- And more! See the complete list of features.
Here is a good Audacity starter tutorial. This will help you understand how basic tools work to get you started creating your own music and radio commercials.