You may know Grooveshark, the excelent online music service to listen music for free. With SciLor's grooveshark.com Downloader you are able to download music from Grooveshark. You can log in into your existing account and download your playlists, search for popular songs or even do a batch search for your favorite music.
What's new in this version:
Version 0.4.12 fixes connection errors.