just use
itunes to convert to
ACC (mp4) which is half the size of an MP3....
i use acid pro to create ringtone in mp3 format. which is usualy 1mb and then i go to
itunes >right click on song >convert to ACC> then from
itunes just drag to folder that you want it in and file should aproximatly be half the size it origanly was
for example: the starwars song i posted, in mp3 format is
1,019kb and in mp4 (same sound quality) is
559kb and itunes works realy well with mac