Hi, new user to Premiere Pro 5, File is being imported with audio delay

Quick and probably easy question! I'm attempting to put together an actor's demo reel. For some reason when I import one of the videos I need , the audio is a second ahead of the video. The clip's audio/video is in synch in my video library so I know it's not the video. I've tried re-importing it, and I've tried rendering it several times to no avail. I've been exploring ways to edit the audio, but being new to this program, have found myself stumped for a few hours now. Can anyone tell me why it's importing like that, or if there is a simple way to fix this, please?! Thank you so much.