Replace Napster playlist tracks automatically on a Last.fm playlist
Napster is a digital music streaming service developed by Rhapsody that gives you access to 40 million songs globally in every possible genre.
Using a music recommender system called Audioscrobbler, Last.fm builds a detailed profile of each user's musical taste by recording details of the tracks the user listens to.
Soundiiz is the most complete online tool to manage your music library between multiple services. It offers a simple way to import and export playlists and favorites tracks, artists, and albums.