A warning to those of you who want to let Spotify get its hands on your precious music libraries... The Gracenote feature will royally fuck up all of your tags that you changed for a reason. Even when de-selecting this feature it's still messing around with everything. Don't even know where to start to fix all of this.
Examples of clusterfuckery:
Phoenix live album merges with the album itself, Daytrotter track numbers and song names screwing up, rarer stuff gets changed even in terms of artist names. Nightmare. Absolute disaster.