Dsound, well, I dont see that many people using it anymore. Some time ago its was very unstable as well, many times, the tracks didnt play. I have the feeling Dsound is gone. Other services are emerging, like Emanate, and the successor of Choon, forgot the name. To your statement: in 5 years time all music will be on a blockchain. I don't think so. Its still way too complicated and the artists wants control over the tracks, ie also be able to take them offline. I dont know of any service in the blockchain world, that allows that. Also, all the professional artists have some form of management, work with labels and so on. These companies will not quickly go to some world where rules dont apply (meaning: crypto world is Wild West). Maybe, someday, music and blockchain will be standard, but only if the services are easy to use, the mass is using these services. Most (if not all) the blockchain based music services, is not easy to use, are instable, and in general have a poor user experience for the music fan. All that needs to be solved, need to be as good, if not better, than eg Soundcloud, Beatport, Bandcamp, MixCloud and so on.