I didn't explain what it is because I'm looking for someone who has used it and someone who has used it would not need to ask me what it is.
Yes, it's a program that you download (for a $15 fee) and you can use it to download YT vids to your iPod. If your player doesn't have a video function (e.g., a regular mp3 player) you can convert the vids to mp3 format and use them as songs. I've only heard of it once from a random on the Net who said he had it (and that it was great) so I wanted to see if anyone here could attest to its merit.