No Audio on capture
 

First time actually down loading footage with HD50 deck into FCP. I don't seem to have audio when capturing but there is audio after it is captured. Also, if I listen through phones while capturing, the video and audio are out of sync. I'm using a dual 2.5 w 2gb ram. Is this common for fcp? Kinda irratating to see capture video out of sync with the audio. Playback afterwards is fine though.

Any help would be greatly appreciated,
Thank-you,
Brian