If you got good speakers now download a song check to see if it's joint then run switch program and you gonna notice the difference. Alot of music files out there now nobody dont know much how to covert them correct so they burn it on there harddrive 320kb's you know that's not gonna sound good and on top of that be 15mb file size over 4 minute song.
You where talking about that one time ago, I do find a difference from joint stereo to stereo at 192kb or 128kb.
http://nch.com.au/switch/index.html