Adobe Audition 3.0

• 1). Click "File" and "Open."
  
  
• 2). Locate the WAV file you want to convert and click "Open."
  
  
• 3). Click "Edit" and "Convert Sample Type."
  
  
• 4). Select "Mono."
  
  
• 5). Enter 50 percent for both channels.
  
  
• 6). Click "OK."
  
  

Reaper

• 1). Click "Insert" and "Media File."
  
  
• 2). Locate the WAV file you want to convert and click "Open."
  
  
• 3). Right-click the WAV file track, scroll over "Item Processing" and click "Explode multichannel audio or MIDI items to new mono items."
  
  

Audacity

• 1). Click "File" and "Open."
  
  
• 2). Locate the WAV file you want to convert and click "Open."
  
  
• 3). Click the downward-pointing arrow in the left track pane, scroll down and click "Split Stereo Track."
  
  
• 4). Click the "X" on the top left corner of one of the tracks.
  
  
• 5). Click the downward-pointing arrow in the left track pane of the existing track, scroll down and click "Mono."