Why won't my music play with iOS7?

I downloaded the new iOS7 I my iPhone 4S and it deleted all my music that I downloaded for free(some off music sharing websites and some I bought from the artists' official sites). And so I downloaded the new iTunes and the music is back on my phone but it's in like a gray shade and won't play. How do I fix this?

Same thing with me. I downloaded my music on this wesite for free and now the music i don't get from itunes won't play. It has a circle and a square in the middle. Which means i can't play it. DO NOT RESTORE YOUR IPOD GUYS! It will crash. Any help?

  • Why won't my Iphone play music? So when I click a song under my ipod icon it skips it and goes to the next song and then does the same thing. I was able to listen to my music before but I did a backup because this is my new phone. I think it did that because I went to itunes to download my music onto my phone and then I did the backup, it then started skipping the songs.
  • Why won't songs play good on my iPhone 5 but play normal on iTunes? When I download music and import it to iTunes, They play fine and normal but as soon as i put them on my iPhone they sound scratchy or like if they were getting fast forwarded. I don't think it's my iPhone because I've put songs in it before but this just started happening today. What's the problem, How do i fix this?
  • Why won't my Xbox 360 play my iPhone music? I've downloaded the optional media update from XBL. I go to the My Music app and it says Apple iPhone but when I go into it, it says no songs could be found. The Xbox is updated and so is my iPhone. I do have music on my iPhone. What's the problem?
  • Why won't my iPhone play music through my car? I have a 2011 hyundai genesis and there's a USB port. I have tried two different cords and four different iPhones and all of them had the same result. The iPhone says trust this computer then goes away faster then I can press anything. After doing this multiple times, the screen on the car will say reading error. Any idea why this is happening?