Grooveshark

Absolutely love Grooveshark. In fact, it's open right now (Woohoo, Queen!). I always recommend this to my friends, since it lets you play pretty much anything. Also, though Grooveshark's subscription fee was raised, it has remained the same for users who have been members since before it was raised.

I've recently tried out Grooveshark Mobile for the iPhone, and so far, the app has been both wonderful and disappointing. Being able to get Grooveshark on your phone is amazing -you can listen to any song on your phone for virtually no cost ($3 a month for unlimited songs is nothing compared to $1.29 per track on iTunes). You don't even need a 3G or Wifi connection; the app lets you download songs (or entire playlists) onto it for "offline" listening.

So if you want to listen to a song, Grooveshark Mobile will let you listen to that song. Unforunately, that's about it. Grooveshark's player sucks in comparison to the iPhone's standard iPod app. Most importnatly, you can't shuffle songs. (Lame.) And the offline mode of the app is rather lacking in features. On offline mode, you can't make a new playlist, so you have to make your playlist in online mode and then download it. You can't add songs as favorites, either. Plus, when you switch to offline mode, your queue gets wiped. So if you momentarily lose your Wifi signal or 3G connection, you will need to re-add all of your songs. This isn't really that hard, though, as long as you have your songs saved to a playlist.

P.S. When you start up the mobile app, you'll want to go to settings and enable high bitrate. Otherwise, your songs may have low sound quality.