I love the idea. My music is now 50% cloud only, 50% on disk. I mean, its 100% in the cloud, i just have local files for half available. Ive been thinking about self hosting some music provider thingy (or even just supporting ssh via my dyndns-like capability) to my NAS and bringing music back to self owned files. However, it is work to do when the internet is pretty reliable, costs are low, etc.
Those who love this conceptually but have/had cloud music, did you act? How/why?