Dear Sir,

This task can easily be carried out by making use of iTunes. Get to the preferences and select the song that you

want to use as ringtone by importing settings to ACC. You will have to set the start and stop time which will be

permitting you no more than 30 seconds. You should also change the format from m4a to m4r. This should

solve the problem that you are having.

Thank you.

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Why not try this M4R to iPhone Ringtone Creator?

It can not only convert M4R to iPhone Ringtone with high quality and super fast speed, but also can convert other popular audio and vedio formats such as mp3, wav, aac, flv, wmv, avi, mov, etc. to iPhone ringtone(.m4r). Also, you can manage your iphone ringtone at you will easily!

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