Hello Troywestfield,

Thanks for using our app and i am truly sorry for the late reply. This is Dorothy and i hope to be able to help you!

To help me check this issue, would you please kindly tell me your ticket ID? And i will check and send feedback to you at once.

Meanwhile, would you please kindly tell me where you plan to transfer m4a files(from computer to device or between iPhones)?

I am looking forward to your reply.

Thank you so much for your generous support and kind feedback in advance.

Best regards,

Dorothy