iLife 09 Licence : upgrading from single-user to family-pack licence ?

Hi,

A friend of mine bought iLife 09 (single-user licence) and installed it on his mac.
He would like to install it on his daughter's mac so he realises that he should have bought the familiy-pack version.
Is there a way to upgrade the single-user to a family-pack version ? Otherwise he would have to buy a new version at full price...

Thanks.