To start converting MP3/audio files, you need to right click on the audio file in Windows. Yes, you heard right...You start the program by right clicking on your MP3 / audio files in Windows.
For example, if you had a bunch of MP3 files in "C:\My Music\", you would first double click "My Computer", followed by double clicking "(C:)", followed by double clicking the "My Music" folder. Select the MP3 files you want to convert. You can select the MP3 files by either dragging, or if you hold down the Ctrl key you can individually select them. Right click on one of the selected MP3 files and a menu will appear. Click "Convert to WAV" and the program will start!
Can't find any .MP3 or audio files on your computer? Try this:
You can go to the Window's Start button, followed by "Find", followed by "Files or Folders". Type "*.MP3" without the single quotes and make sure "My Computer" is selected in the "Look In" control. Then press the "Find Now..." button. This will take awhile and scan your hard drive for all your mp3s. Then you just have to right click on the ones you want to convert!
To find other audio file types, search for "*.WAV", or "*.WMA"