The Alan Parsons music was only used by ABC in their promo for the series and was never used in the series proper. Scanning production notes for the series won't show you this information.
Jen very thoughtfully provided a link directly to what you want a couple of posts down. You may have to down load the entire album to find what you want as I can't remember the track title concerned. Be aware that you're searching for a short sequence of about 16 bars of music, if that.
Go to the link that the Lovely Jen provided, download the entire album if you have to, and you'll have the piece of music you're after.
Otherwise, you'll never, never know.
