Napster, the brand synonymous with the music piracy boom of the early 2000s, has a new copyright challenge. Together with audio giant Sonos, Napster faces a lawsuit demanding over $3.4 million in alleged unpaid copyright royalties. Filed by SoundExchange, the complaint centers on missed payments related to the "Sonos Radio" service, which until 2023 was powered by Napster's music catalog., “Sonos and its agent Napster have failed to pay at least $3,423,844.41 comprising royalties owed for the period October 2022 to April 2023, interest, late fees, and auditor fee-shifting costs , “In total, Sonos, and its agent Napster, have failed to pay at least $3,423,844.41 comprising royalties owed for the period October 2022 to April 2023, interest, late fees, and auditor fee .