help with custom ringtone apps!!!

Hello! I just recently purchased the HTC EVO 4g, and boy is it lovely.

im trying to use a custom ringtone maker app, and have used both myxer and ringdroid, and both are great. however, once i make a ringtone or notification tone from an audio file, the new file is seriously messed up. it always sounds like its, for lack of a better term, "chopped and screwed." i can always do it from my computer and send it but i'd rather just do it mobile. both apps gave me the same results, and i also tried it on multiple audio files (up to 10 of them)

any help/suggestions? the phone is brand new so there shouldnt be any problems... hopefully.

 

some of my own mp3 files

i just used ASTRO to move the files over to the ringtones and notification tones folder. that worked but they are only the original audio files, and i wanted to clip em. i guess i can live with that until i can figure out whats going on.