Intermittent sound in music and ringtone

Hi guys ,
I have a problem in sound in my phone "meizu m5"
the sound does not play continuously , it plays ,stops for few seconds then plays again then stops again...& so on.. it's very annoying
however this does not happen in youtube or watching stored videos or playing games
only happens if you play music (audio) , selecting ringtone from sound settings or if the phone is ringing when someone is calling me
Did that happen to anyone here ? and how to solve it ?...

Intermittent sound in music and ringtone

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