Samsung SGH-T809 / SGH-D820

In my opinion, mp3 ringtones aren't very loud. Now to fix this I tried to set the volume to 150-200% when I cut the mp3 song so that when I loaded it in my phone, it would have double loudness. Although now loud, the ringtone quality sounds scratchy. Maybe it's the bass on the song that makes it sound so bad so maybe I need to use a diff program that controls volume, bass, and edits the audio clip. Anybody any suggestions to increase volume without jeopardizing sound quality? 😳