Do you use an “iTunes compatible” device like an Iomega ix4 or Drobo FS or Roku SoundBridge? Have you noticed that it no longer works since you updated to iTunes 10? That’s because Apple made a simple change to their Digital Audio Access Protocol (DAAP) that causes third-party devices to fail to connect correctly. Although software patches are already appearing, there is no guarantee that older devices like that Roku will ever be updated.