Okay so, a few days ago my dad bought me and Iphone 4 and Jailbroke it. My friend told me that you could get free music from this website called Youtube-MP3.org, so i tried it and i downloaded about 25 songs from youtube onto iTunes. It took me forever to figure out how to download the music onto my phone, tho. (I had my phone plugged into the computer already). I went to tap up at the top called "Music" and i checked the box that said "Sync Music", and it downloaded the songs onto my phone. The next day, I decided that i wanted to get some more music on my phone, so i did exactly the same thing that I did the day before, except i didn't know what to do when i came to the "Sync Music" button because it was already checked… So I unchecked it and a box popped up and said "If you unsync music, then all of the music on your iPhone will be erased" and i thought it would be okay because i could just check the box again and re-download the old music, plus the new songs that i had just added to my iTunes. But it didn't work and now the music is only on my computer and I can't figure out how to get any back on my phone.