looking more closely at what you are trying to do, i don't think a multiple item add to cart is really not the correct approach.
with a multiple item add to cart, the cart items are not dependent on each other. meaning that if you added the bundled products as a individual products, any one of them could be removed, there by breaking the bundle.
It would make more sense to create one product that is the bundle. One product that represents the products in the bundle, so rather than adding multiple line items to the cart, you really only add 1 line item, and that product that is added is in reality all of the products that are in the bundle.
As for the blue sky footwear database, that is replaced by the blue sky music database in the SiteAssist and DataAssist: Solution Recipe Files that can be found in the data assist download center page.
