Sony A3000 Helpppppp

[Blue.Rocket]

Hi All;
My son has a Sony A3000 MP3 Player, he has been using it well, but he has just removed all the songs and started to reload some new ones, however when he has loaded them onto the player, the name is there but the sound is not, the word ERROR is visable.

Any Ideas please..

 

[Blue.Rocket]

PLease don't reply, have thrown it in the bin, Sony again failed me.