Rip it through the soundcard.
Set your mp3/mp4 player to output to a bunch of channels.
Get you WAV recorder to record from those same channels.

You can even do it with Windows Mixer and the crappy recording software they supply as standard.
Set your mp3/mp4 player to output to a bunch of channels.
Get you WAV recorder to record from those same channels.

You can even do it with Windows Mixer and the crappy recording software they supply as standard.