i tunes walin lesiyenma karaganna puluwan, google karanna, hoyaganna beri unoth pm karanna, app store eke app ekakuth thiyanawa ring tones kiyala.. eketh tute ekak thiyanawa
go to audiko.net
Upload your ring tone and then select the 30 seconds you need, and create ring tone
then download it and add to iTunes. ( the format will be .m4a)
Connect your iPhone, enable sync ringtones under iPhone settings.
then Sync