Many of you reckon downloading music off the internet is OK because CDs are just too expensive.
CBBC Newsround Online users have sent in loads of comments about this subject.
Downloading music from sites like Kazaa isn't legal because music is copyrighted and should only go to people who've paid for it.
Millions doing it
But the boom in file-sharing services like Napster (which had to close down) and Kazaa means millions of people worldwide are swapping music with each other for free.
The music industry is trying to get courts to stop the file-swapping because artists are losing money.
But you say if CDs didn't cost so much you wouldn't do it.
Jamie, 13, from Kansas says: "I do download music off the internet. I think it isn't fair to the artist even though I do like to do it! It's way cheaper."
'Cds should be cheaper
And Sarah, 14, from Aldershot adds: I'll stop downloading when record companies bring the price of CDs down. CD's should be £2 at the most. Kids are their target and if they want us to buy the CDs then they should put them at the affordable price."
Eethar, 14 from Riyadh says: "There is no way I'm buying a CD, I download everything from the net. Stuff is too expensive, most people download their stuff from the net or buy illegal copies, so do I, you don't expect me to spend 20 dollars on an album?"
But some of you do disagree. Sarah, 15, from Grimsby says: "Downloading is wrong because it will soon put record companies out of business, but everyone does it!"
What do you think?