SanDisk iXpand User Manual page 37

Music
Supported file formats
MP3, WAV, AIFF, M4A, AAC
The Music section will combine Music that resides on the Drive and within your iTunes
Library. Enjoy all your Music on one central location.
You can tell where the Music file resides by the iTunes icon next to the file.
If the music file has this denotation, then it is located in your iTunes library on the
iPhone or iPad.
Playback
1. Connect the iXpand Drive to your iPhone or iPad.
2. Choose the "View Files" option from the Home Screen.