Here in canada we pay a royalty tax on blank CDs regardless of what their intended use is. I mainly use CD's to back up MY data such as pictures I've taken or to burn free software I've downloaded from the internet (ie redhat, freebsd). The way I see it, we've already paid for the music with that royalty tax.
Then there's the whole issue of CD's being more expensive then cassettes! WHY? CD's cost way less to press then cassettes do to make, sell in greater numbers so that subtracts from the manufacturing costs even more. I remember when CD's first came out they were more expensive cause they were "new technologhy" and artists got less of a cut because money had to go into "paying for the technology". I don't know if the percentage has been raised for artists but i can't see why they cost so much compared to cassettes.