I notice that purchases from the App Store on Mac are billed as iTunes.

Is there any way to use a different card to charge App purchases on the Mac than you use for music on iTunes?

The reason I ask is that App purchases are almost invariably things for my Mac that relate to business and should therefore be charged to my business account.

Music from iTunes obviously is not and should be charged to a personal account.

I cannot see a way to treat the two types of purchase separately so wondered if anyone else has found one? Of course you could manually enter new card details every time, but that is a bit tiresome in this day and age.