On the phone help app it says use Google Play Music, but when I try it doesn't give me an option other than subscribe. I might as well buy an MP3 instead.
When I google it I just get suggestions for music streaming apps which can work offline. I already have Spotify, but I don't want to download to listen offline, I want to play my stored music and this doesn't seem to be an option.
I can't find the stored music file on my phone to see if I can work it from that end, but it definately copied over.
I can't find anything similar on this forum, and I'm sure what I want isn't that hard, so I have a feeling I'm missing something very simple.
Any help greatly appreciated.

I didn't find the right solution from the Internet.

-References
-https://forums.lenovo.com/t5/MOTO-E-2nd-Gen/How-do-I-use-my-phone-as-an-MP3-player/td-p/3637156

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