[fly-over-the-sky]

I have sony nwz-b142f mp3 player I'm using WMP 11 to add songs to it
the files transfered and can open it ,the problem is that
the timer counts down but there is no sound
although all songs that originally comes with the device runs with sound so clearly
where is the problem?
please help
I tried to convert my files to a higher samplerate
tryed to convert also with the new real player
and it doesn't work


also the fm dont work in any persit!
I thought it may have a hardware trouble
but i found the song originaly comes with it is running with sound and n

what is the solution for that
thank you