Life is too short for all this stuff.
You have an ANALOGUE audio output from almost every computer on the planet. It's for driving speakers or headphones or whatever.
Simply plug that into a recorder: It needs a 3.5mm stereo plug/socket out, and there is usually a similar arrangement for "in". If your computer is clever enough (windows and Linux boxes can certainly do this, usually), you can record from the "line in" socket simultaneously with playing back a YouTube video. The audio recording stuff (of very simple form) is bundled with Windoze. If you can't find it or don't like it, I'd recommend Audacity, which is available free for all PC operating systems (I use it on Linux, but it's free for Windows too).
No other complex "ripping" software (of dubious origin) necessary. You _will_ have to adjust the volume, probably, but the results will be quite good enough for the purpose. On'ce you have an audio file, you can easily put that onto CD with your usual CD writing software.