Apple iPod touch "song parting glass" Questions

...requests apparently.. The ipod in itself seems to be working fine.. Touch screen is working, songs are playing.. I called up a service center as well and they said they cannot replace broken ...

...still plays the music but the screen looks cracked although the glass isn't. It doesn't display my songs or menus. Can you help?? Many thanks If you know how to open NW-A808 MP3 player then please ...