Hi, I have a problem with these apps. When I use Music Metro app and I choose a song to play, the Music app disappears and Windows returns to Start menu. Am I the only one who have this issue?
This is because you are probably using the N edition of Windows 8. Please download and install a non-N version of Windows 8 in order to use the Music and Videos apps because these apps rely on Windows Media Player, a system component which is not shipped with the N version of Windows and which is not yet available as a separate download from Microsoft. It is highly recommended that you reinstall Windows and use a non-N edition. Also note that the N versions are intended to be used only within the European Union area.
No, I have Windows 8 Pro Media Center, but I've discovered why I can't use those apps... because I've installed Italian Language Pack. In fact if I change the language to English, Music and Video Apps work correctly. It's probably a bug of the language pack...
On laptop, check Fn + Function key combination. You will see multimedia symbols like playback, pause, volume up, volume down, mute, etc. On desktop, you need multimedia keyboard which has dedicated multimedia keys like playback, pause, volume up, volume down, mute, etc.