Feh, Downloading a program to download the file, extract the audio, convert it, then save it - just opening the crappy audio recording thing that comes with Windows, recording with Stereo Mix [records right off the sound card], and playing the video - then saving it just feels like less steps.
Actually, DVDVideoSoft is incredibly simple.
Go pingas dBPowerAMP, and/or GoldWave.
These are the steps for me:
1. Copy youtube link
2. Paste in MP3 downloader
3. After downloaded, drag and drop to goldwave batch convert
And that's it.