The company, analysts said, has done the best job in the industry of using music as the link between its computers and audio devices.

The challenge is to make connections between devices seem consistent, strong and elegant.

The service is based on syncing data between different devices.

Ease of use and flexibility between varying devices made it popular.

It will also sell software to compensate for differences between devices.

It seems to me that I want music in highly compatible, easy to move between devices and listen to.

Being able to transfer info between devices simply by touching them together is something the average person might like I think.

You're not able to move the same token between devices.

The player can use codes from both without having to switch between devices.

It is used primarily as a replacement for cables between devices.