Why can't I add music to my iPhone

I just downloaded a couple of songs and when I try to drag it over to my iPhone on iTunes it won't work. It shows the red circle with a line through it symbol and the music is going over.

When that happens, that usually means your iPhone isn't synced into your computer. Click on the name of your iPhone and in the bottom right hand corner there will be a button that says "Sync". Click that, and you should be able to download music.

  • Why isn't iTunes letting me add music to my iPhone 5? I added a bunch of songs that were on my mom's computer earlier today and they all transferred fine, but i still had more songs on MY computer so i went to transfer them but they're not letting me. I connected my iphone and registered it to the computer just like i did on my mom's computer but every time i dragged the song from the library to the phone it wouldn't transfer. It just didn't do anything when i dragged it.
  • WHY CAN't I ADD MUSIC TO MY IPHONE? I synced like a million times but it shows that freaking round circle with a diagonal slash through it!
  • Why can't I add my music from my library onto my IPhone? I downloaded music from Youtube to put onto my IPhone, I dragged and dropped the music here and there and now it is in my Itunes library, but I can't put it on my phone. Syncing doesn't work at all. Why the **** can't I do this? Is this some copyright bull ****?
  • I can't drag and add music to my replacement iphone 3gs? I've googled for answers but i'm still lost. my old iphone 3gs had to be replaced so i received a new 3gs iphone. when i connect it to itunes, i can't add music to it -- specifically, by the dragging method. i'm clueless!