IOS 7 doesn't play most of my songs?
I recently updated my iPhone 4S to IOS7 and since then my phone has stopped playing about 80% of my songs! They just appear as grey squares! I went to the apple shop and they told me to do a factory restore and then update my contacts etc from iCloud, I have done that twice and still once the songs are synced onto my iPhone it refuses to play most of them! Anyone know what else can be done in this situation?