I'm going to agree with Naemanson on this. I make copies of CDs I have purchased in order to listen to them in my car. I do the same with vinyl records. I would NOT make a tape to give to someone else. (The exception being Grateful Dead tapes, which are openly copied and exchanged, apparently with the band's blessings.)
I exchange CDs (or tapes, or vinyl) with several friends, and as far as I know, we all adhere to the same rules. Listen to it; if you like it, put it on your "want list".
We also each have a few CDs that we bought because we liked the live concert (or were given as gifts, or whatever) that are in the "if you like this, then keep it" category. Better the CD live with someone who will listen to it than sit on a shelf unheard.
campfire