It's very similar to Google Play Music's free cloud storage offering, but the only problem is that Microsoft's OneDrive link won't reach Xbox Music on your Android or iOS phone, and Google Play isn't on your Xbox. Meanwhile, on PlayStation a coming Spotify integration will replace the Music Unlimited service that very few people were using, and of course Amazon has its Cloud Player. While Microsoft has found a way to get us using its cloud service more (playing custom mixes during Xbox One games should be easy now), choosing when and where to upload each file is only more complicated.