I'm new to Spotify and wanted to know if there is a way to match my personal library of MP3s (for those MP3s that Spotify has). Similar to what Google Music does, so you can access your MP3s on any device through Spotify. Basically it would recognize the content I own and add those MP3s (if they have them) to my Spotify library. I guess I could do this manually by going through my collection and finding each album on Spotify but this seems unrealistic since I have approx. 4600 MP3s.