dunno which plugin, just known one exists cause Ive heard others speak of it, it isnt fast, works in real time and records the stream as it goes thru your soundcard
me, I use linux and use mplayer to pipe the audio into oggenc or lame, often for people in your situation

I did a dvd full of music for someone over the weekend who owns a mac
dunno what to tell you, cept GPL or open source software may be one of your few choices.......none of the software companies want to touch this for obvious reasons
mplayer can be run on windows though, and used with the command line, its even easier with cygwin(makes a linux like bash shell environment for windows)
cant be much more specific than this or this post will get killed for piracy issues