Spot the Difference

[Mid Life Crisis Marathon Man]

A cool spot the difference game from our friends in the Netherlands.
Audio clues for those blessed with speakers although volume is low.
3 to find, no winners so far.

http://members.home.nl/saen/Special/Zoeken.swf

Clearly some left-over influence from your heavy metal days, Sweder. Which is ironic, given how quiet the audio clues are.

I found two, incidentally. The backwards audio hint was a big help. (Tip: count the birds near the boat).