Just for anyone wondering, as it has taken me a good few hours to work this out.
None of the previous fixes seemed to work for me, including adjusting line-height in the the flash file, or adding a 'line-height' property to the CSS.
Instead, as flash doesn't recognise line-height, you have to use 'leading' in the "sifr-root" class to add line height. You can also use minus integers to reduce line height.
Eg: .sIFR-root { font-size:24px; font-weight:normal; color:#666666; leading: -20; }
Tested is Chrome (5.0.3), FF (3.5.4) and Safari (5.0)
A quick off note also, hand pointers don't seem to work in Google Chrome either! I spend ages testing ripping my hair out, when all along it was fine in Safari and FF. A nice-ish "designer work-around" to make the links look more, well, linky, just add text-decoration:underline; to the a:hover of your link.
