LG fm37 "rebuilding the library, please wait" mess
 

I have a problem with my LG fm37. After removing the player from an USB port, it appears a message which says REBUILDING THE LIBRARY, PLEASE WAIT 00%, this often takes a while...But this time, the screen didn´t change. I tried to reboot the system using the reset hole, pressing down the ON button, plugin the player to the computer's USB and now the battery ran off and nothing seems to work. Any advices? Thanks!