Although your phone does support custom POLYPHONIC ringtones, this phone does not support Samsung PC Studio - where you can use software to copy ringtones from your computer to your phone.
However, by downloading the Samsung USB drivers and IF you have a memory card you may be able to transfer your ringtones to the memory card in your phone from your computer then:
1. From the main screen, press 'OK on the navigation key' > MENU, use the right navigation key to
highlight 'Settings & Tools'.
2. Press Sounds Settings.
3. Press Call Sounds.
4. Press Call Ringtone to choose:
• Preloaded ringtone(s) or
• Custom ringtone(s)
- Press Get New Ringtones.
Then follow the prompts.
To download the USB drivers click on the following link, then click on. "Software' just under the 'Downloads' Tab. Then click on the EXE File (under File) then download and install the USB drivers to your PC.http://www.samsung.com/us/support/detail/supportPrdDetail.do?menu=SP01&prd_ia_cd=&prd_mdl_cd=&prd_mdl_name=SCH-U410