Why can some WMA Audiobook titles be transferred to an Apple device, but others cannot?
By default, Apple devices have the option ‘Manually manage music:’ disabled. This works well when users want to automatically synch the iTunes Library on a single computer with the device whenever it is connected to that computer. However, an Apple device can only be automatically synched with iTunes on a single computer. For people who want to allow their Apple device to work with software other than iTunes and/or to receive content from multiple computers, the option ‘Manually manage music:’ must be enabled.
