No problem. You're not being mean.

I just wanted to let you know there is a way to save 50% of time and space. If you don't care, fine. If you do, now you know what to do. So, fine either way.

It's nice of you to share your mp3's to people who don't know how to make them from tapes. I wouldn't worry about those people giving mp3's to others - if they wanted to they could have given the tapes to others, so there's really no difference.