Check out this comment. In particular:
It feels like the answer to most “will it work?” questions is going to be “It’ll work, but it won’t be as good as it could be”, because lets be honest, no-one is going to wonder whether a Mac Pro works flawlessly or not.
Flash/SSD storage is a big win. The metadata and artwork databases I was talking about are sitting in your home directory on your boot drive. If you have a small amount of music (lets say, less than about 1500 albums), it barely matters, but as your collection creeps up towards 5,000 or 10,000 albums or more, storage performance begins to matter a lot.