How to transfer music from my pc to my iphone?

I just got an iphone and the only music that is in the itunes app on my phone are the songs i bought on itunes. How to i transfer All the songs i have on my itunes to my iphone? Like the songs i downloaded (not purchased). I plugged in my iphone to my pc and it said it synced but none of the songs are on there!

also, how do i put songs in the Music app?

Make sure it is checked in iTunes to sync songs. Then you can either tell it to sync your while library or select what to sync. If you check that you only want certain things to be synced, you need to be sure to check off the songs/albums/artists you want on your phone. Any music synced to your phone will automatically be out in the music app.

You can have a try with 4Videosoft iPad Manager, which is able to transfer music from your PC to iPhone very easily. I'd like to share how do I transfer music from PC to my iPhone:

1.download and launch the program on your PC

2.connect iPhone to the program via USB cable

3.click "Import file(s)" button to select your PC files and transfer them to iPhone

You can follow the above steps. Find it on the Internet and have a free try.