hello
my sister recently got a new samsung double flip from bell.
We're having issues uploading music files onto it. I plug it in, it says the phone is connected to bluetooth, then i try to transfer the file and it says that the file is not supported by the device or something.
I have tried many songs and have made sure that they are MP3 files, which apparently the phone is compatible with. So i don't know why the phone isn't accepting music files, can anyone point out what i may be missing?

any help is appreciated
PS- i'm using a mac, and i was wondering if perhaps my mac isn't compatible with the phone?