Why can't I use my own personal music collection as ringtones?

[AC Question]

Hi! I have recently been given a Samsung Galaxy Core Prime 4GX. I would like to set my own personal music collection (loaded from my PC to the phone using Google Play Music Manager) as ringtones for my contacts.

I have tried numerous ways of doing this, but with no success. My only options appear to be the set ringtones in the phone or to purchase ringtones; neither of these options is appealing to me.

Does anyone know a way? I would sincerely appreciate your help!

Thanks,
Graeme

 

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