tering the real-time relationship of the audio to the video (correcting the "pitch" problem you mentioned). Any good lab will be able to resolve your audio, just be sure to tell them what you've done with your picture since shooting (transferred to PAL, etc.).
Another way to avoid this is to have the lab sync the sound when they do the telecine. It isn't very expensive if you have good camera logs and slates. That way, you will have beta tapes with pix and sound in sync. The quality of the sound on the beta tapes should be fine. Once you have edited picture, you can take the sound and dump it to a different format (DAT, DA-88) to sweeten, add tracks and mix to your heart's content. As long as you don't change the overall length, your finished sound track will match up with pix. This method will end up saving you a lot of money in the long run, without noticeable quality loss.