I would like to separate a mp3 file according to that it has different sounds played by my left and right speakers. So I am reading this link http://b27.cc.trincoll.edu/weblogs/sta/2010/05/how_to_extract_instrumental_version_of_a_song_audacity.html
First of all open the song. File --> Open
Next, you want to split the track into two channels. Click on the song title bar (on the left hand side). Click on the title bar and then select "Split Stereo Track."
Now two separate channels for the song will be displayed. Highlight any one of the two tracks, then go to Effect --> Invert.
What are the definitions of a track and a channel? I have googled them, but surprisingly can't find them.
Are they defined for different things?
How are tracks and channels related?