I had about 4 Gb of music working fine on my n96, added another 500Mb today using copy and paste in MTP. Then refreshed library, wouldn't find the files. So I removed the files and added them using Nokia Music... Same again. So I removed them, tried *#7370#, no joy and now the music player won't find a single song I have on the phone.
So I tried a re-installation of the firmware (20.050). Still music player won't find a single track.
HELP!