Hello to everybody here. Please, excuse my possible English mistakes.
Some years ago I found that situation on Jamendo. At the begining I was a bit confused, but when I knew Amazon was printing and selling books from Wikipedia, I saw the things from another perspective. I supose Jamendo is doing the same thing. Due to the ignorance of people about Creative Commons licenses, Jamendo can sell all the music covered by different licenses than CC-BY-NC: that is perfectly legal. But, why people pay for music that is ready to download with no payment? Well, because most people do not know it.
By the way, I want share with you a reflection about the theme: If all we use the CC-BY-SA license in our works, are we giving the power to the big companies to make money using us? It is true that the things they sell will be covered by libre licenses, but, Does it matters to the companies when they are receiving good money for nothing? In fact, those companies can use that money to figth against the libre culture.
All that said, I think sometimes I'd like cover my creative work with the BY-NC-SA license. I know this sound a bad idea (may be it is), but I imagine, I make some video, I put it on internet with CC-BY-NC-SA and for this reason if somebody else wants use my work, my permission is needed. If Amazon ask me, I'd say: F... you. But if a community project write me, I'd say, well, what is your goal?... and then, if we can agree, perfect, everybody is happy.
Have a happy and libre day
