I've been using Spotify for a couple of years, always free user. At first there were only the ads, with no limits, now they short it at 10 hours/mo. It's a good legal way to try new music which you aren't sure is worth purchasing, but while their catalog is huge, there's plenty of music they don't have available. Or perhaps I have a weird musical taste. Anyway, it's a good service and I wouldn't mind paying for it if the limits become too short.