NuTsie is a recently launched music service that lets you access your iTunes library on your cell phone.
With a nuTsie membership, you can export your iTunes metadata to its servers, where your iTunes library is compared with the music in nuTsie's database. The music you hear is coming from nuTsie, not iTunes, as there is no transfer of actual music from your iTunes library. NuTsie is accessible on the web as well as on your cell phone, and you can also share your playlists with others on nuTsie's web service. This feature will soon be accessible on the phone. Currently, nuTsie is supported on a small variety of Nokia phones, and a handful from other brands.
While you can share your playlists with others, there is no way to get additional information about individual artists that are listed. This would also be an easy way to direct users to buy more songs directly from iTunes. Yet, with the upcoming iPhone, which will play your songs from iTunes, it will be an interesting option for those that cannot afford to purchase the iPhone but still would like mobile access to their iTunes library. Also note, the nuTsie site is a bit slow right now, and we're unable to listen to any music.
Somewhat similar services include MyStrands and FineTune.
[via]