One protester in San Francisco pointed out that Apple CEO Steve Jobs has appeared to share this viewpoint in the past; the protester's sign showed a quote from a 2002 interview with Jobs, who said, "If you legally acquire music, you need to have the right to manage it on all other devices that you own." Music purchased on Apple's iTunes Music Store is known for being incompatible with non-iPod MP3 players, such as those from Creative and Sandisk.
Of course, protesters from the Free Software Foundation aren't the only ones calling for more interoperability from Apple's audio products. According to BusinessWeek, Norway has found the restrictive tie-in between iTunes downloads and the iPod illegal under Norwegian law. Chunks of Apple's End User License Agreement are also considered illegal, and the country has called for Apple to make necessary changes by June 21 or face fines. BusinessWeek says Apple may face similar demands in Sweden and Denmark, as well. These events follow discussions surrounding France's "iPod law", which also calls for more interoperability between DRM music formats and portable digital media players.