Audio issues...

Hi everyone,
I am new to FCS and pro/vid. I am using FCS 5.0.1 on a PBG4/17 1.33 512ram Mac OS 10.4.3 and everything seems to working fine.
My question is regarding the incorporation of audio. I have an MP3 track that I want to use in the video I have prepared. When I listen to the audio file in the viewer everything sounds perfect. However, when I drag the file into the sequence and render it, the sound is terrible. There is a pop almost like a metronome over the entire track. The sound is very poor.
I have adjusted the audio under the User Preferences to high with no change in the quality of the playback. I am not sure what is going on. I hope someone can help.
Thank you.

Mark

FCP hates compressed audio. Use iTunes to convert the mp3 into an aiff file and use that.

fcp doesnt like mp3s. use itunes or an audio app to convert it to a 48k aiff

Thanks everyone. The Aiff file worked very well.