Customising ringtones for different contacts?

[AC Question]

I used to have different ringtones for different contacts and have noticed that now it has defaulted to the phones ringtones despite not changing anything manually myself?

I'm not sure when this happened but it was working fine until about couple weeks now. NOt sure if any update has occured or something but now it's all default tones in phone

I have my own mp3 file son the phone and can see the mp3s however it doesn't let me to choose my own

 

[the tall guy]

Have you perhaps moved the file? was it on an SD card? can you move the mp3's to the ringtone folder?