If the authorities raise taxes on regular cdr's that can be used to backup your own stuff, they should be consequent and make a law that legalizes copying music.
For example there's this Janssen's Pharmaceutics company in my town. They massively use cdr's to store their data on. Would they also have to pay this tax? Even if it's only for home use: I do not plan to pay 5-6 Bfr/CDR,that goes to this lame music industry cause I don't burn audiocd's anyway.
And what do we get in place? Better music, cheaper music cd's (new cd from famous artist cost 800-900bfr), free concerts? I don't think so.