Step 1: Connect

Connect to Beats

Step 2: Select Input

From CSV file

CSV file with the following headers: "SongName","ArtistName","AlbumName"

From Rdio

Note: Assumes the Rdio Playlist is Public.

From iTunes Export file

Use iTunes to export playlist to an XML file

From Spotify

From Grooveshark

Due to Grooveshark's API Terms of Service (namely this clause: 'GROOVESHARK will receive all advertising revenue generated by Licensee's use of the API.' I will not be implementing a Grooveshark importer.

You can however go here to export your Grooveshark playlist to CSV and then use BeatsImporter to import the resulting CSV file.