How to remove vocal from a song with Adobe Audition 3.0?

It is not easy to remove vocals from a song completely. However, you can try to reduce the vocals using Adobe Audition 3.0 as follows:

•  Step 1: Open the song
•  Step 2: Choose tab Effects
•  Step 3: Select Stereo Imagery > Center Channel Extractor
•  Step 4: Decrease the Center Channel Level & Crossover
•  Step 5: OK & save the file 

Please notice that:

• You may PLAY the trial version of the instrumental music while adjusting
• You should not tick Volume Boost Mode (it makes the sound terrible then)