Well, I, myself found one type of program, although it has a major flaw. I found it through one of my favorite free/share-ware sites - majorgeeks.com .
It is called, appropriately enough, "Free Sound Recorder", it records sounds playing on one's computer in mp3 format, so it works off of your computer's sound card.
On the one hand it saves me the trouble and extra steps involved with having to download a whole video and then using my other program YouTube Downloader to extract the audio. On the other hand since it is working with a live playing audio using my sound card, I can't use my sound card for anything else in the interim.
Of course, the major flaw is that the mp3 files can only be created in real time and (actually the following is a 2nd major flaw) they can only be processed one at a time.
A third, though minor issue, is that nothing else can be playing on the computer while this is going on.
Well, I'm going to keep looking for a more versatile program, in the meantime I hope someone else can come up with another suggestion for me
Thanks in advance again, Leib