Open up iTunes. And then go to where ever you save your music on your computer. Then highlight all the songs in that folder, and drag it into the Music Playlist on iTunes. Then just plug your iPhone up and sync it to it.
Open up iTunes. And then go to where ever you save your music on your computer. Then highlight all the songs in that folder, and drag it into the Music Playlist on iTunes. Then just plug your iPhone up and sync it to it.