You can get ringtones by downloading them directly to your phone or to your PC. Then transfer them to your phone and your good to go. You can also get them from another phone through Bluetooth.
You can either get ringtones by using the internet on your phone to go to your providers web store, or there are a couple different websites online where you can download or create your own free music ringtones.
Google for 'free midi ringtones' and download them. Connect the phone to the PC with a canle andcopy the files to the phone using software that came with the phone.