MP3 files are a common format for audio files and can be played on nearly all MP3 Players including the older models, as well as many mobile phones and tablets. Choosing the MP3 format will ensure compatibility with nearly any portable audio player.
* Compatible with nearly all portable audio players
* Able to burn MP3 files to CDs for listening in the car (although it’s recommended to play directly from a portable audio player in the car via direct connection or FM Transmitter)
* There are many MP3 files per audiobook (can be more than 100 files per audiobook)
* No automatic bookmarking feature to remember the playback position (however, the playback position will be remembered if the portable audio player is left on the audiobook; player can be paused and/or turned off and when the player is turned back on, it will remember the playback position)
M4B files have been developed specifically for audiobooks, but can only be transferred to Apple products, including the iPod, iPhone, and iPad. Choosing the M4B format will allow the audiobook to be “bookmarked”, which will save the playback position even if another music option is selected before the audiobook is completed. The M4B format is the new standard for digital audiobooks, but only choose this format if you plan to transfer it to an Apple product.
* There are only a few M4B files per audiobook (will usually be 1 file per audiobook but can be up to 4 if the book is extremely long)
* Features automatic bookmarking to remember the playback position (even if another music option is selected before the audiobook is completed)
* Only compatible with Apple products, including iPod, iPhone, and iPad
* Not able to burn M4B files to CDs since the files are too large to fit onto a CD (it’s recommended to play directly from a portable audio player in the car via direct connection or FM Transmitter so CDs are not needed)