Panasonic 920p

Hey guys, I tried to figure this out recently, but I get the failure to find how to make a ringtone high quality. I "Format Factory" software called converter current file it does file converter mp3 to amr playing on my 920P (Panasonic) cell, but it also gives me a terrible quality. It converts the file to mmf but he's not playing on my phone. Could you guys please help me on thisa

Thank you in advance I'll appreciate the answers.

http://www.ventones.com

Step 1 to download a music file
Step 2 select the part of the file you want as a ringtone
Step 3 they text it directly into a text message

Free