Spotify introduces a Web site aimed at explaining its operations to artists and other music professionals.
Co-founder Tim Westergren charges the RIAA with running a "misinformation campaign" and denies lobbying for an 85 percent reduction in artist royalties.
The lawsuit accuses the satellite radio company of not paying royalties for music it plays that was recorded before 1972 when federal protections kicked in.
The milestone reflects the industry expansion and growing popularity of Internet radio and other digital music services.
Representatives from Pandora and venture capital company note there isn't a single profitable digital music service and they blame high royalties.
Every time one of those drives or discs leaves a factory, the Blu-ray Disc Association will get a royalty.
A consortium of music industry trade groups say they have come up with proposed royalty regulations for Web sites that offer streaming music services.
After two years of negotiations, larger online radio stations agree to pay music industry 25 percent of revenue or a flat per-stream rate, whichever is greater.
The Copyright Royalty Board has raised music royalty fees and the satellite radio provider will pass those costs on to customers starting next month.
Sony, Warner, and Universal argue that under state law, the music streaming service must pay license fees for songs recorded before 1972.