How to get music from a cd onto my iPhone?

I transferred the music onto my iTunes library on my computer, but it's not allowing me to put them on my iPhone. What should I do?

Make sure their checked for sync. Also make sure music is checked to be synced in the iPhone settings window.

You must use this powerful iPhone transfer. It supports to transfer files from computer to iPhone or from iPhone to PC.
When the files' formats can't be supported, you can use this transfer convert them before transfer them. For example, you can use iPhone transfer convert the CD music to iPhone MP3, or AAC, then you can backup it to iPhone.www.ipodtransfersoft.com