Eddie G 写道：

> I have the z520a and installed the Sony PC Suite and cannot figure out
> how to use the MMS home studio. I want to edit a clip from an MP3
> audio file and put it on the phone to use as a ringtone.
>
> Any help is appreciated.
>
> Eddie G

mp3 to ringtone gold can help you ,download it at
http://www.mp3-to-ringtone.com/index1.html