| 摘要 |
<p>A portable secure digital audio player (24) and an Internet accessible service (22) for selecting music for download to the player are described. The service (22) provides access to a variety of MP3 encoded digital music. A subscriber uses the service to select a playlist, or to instruct the service to automatically generate a playlist. The service (22) may track the subscriber's musical preferences and copyright management information on the selected music. The player (24), which includes modem circuitry, connects to the service (22) either directly or through the Internet (23), identifies itself to the service using a unique identifier, and downloads the music in the playlist. Since the service may only download music to a secure player, the player may only accept music from the service, and the player cannot digitally transfer the music to any other device, the risk of piracy is reduced.</p> |
