The lawsuit seeks $150,000 for every song copied by XM customers to an Inno device, according to the BBC. XM claimed that the music stored on the device only lasted as long as a customer subscription, and could not be transferred elsewhere.

XM and Sirius Satellite Radio recently launched radio devices with recording features, similar to Apple’s iTunes service. The stations allow subscribers to record up to 50 hours of broadcasted music, or search for songs by particular artists, for a subscription fee of $12.95 a month. XM has more than 6 million subscribers, and Sirius has more than 3 million.

XM has vowed to defend itself against the legal action. XM spokesman Chance Patterson commented: These are legal devices that allow consumers to listen to and record radio just as the law has allowed for decades. The music labels are trying to stifle innovation, limit consumer choice and roll back consumers’ rights to record content for their personal use.