Altium -- how to link multiple real parts to a library component for supplier live links?
Having come back around to this question a few times in the last few days, I've come up with two possible approaches:


Convert the single part into multiple parts, and place as necessary in the schematics. This accounts for all parts in the BoM but comes at the disadvantage of having to manage n times as many parts in your design (where n is the number of parts that you split into.
Edit the BoM by hand before it gets used. While very effective and much simpler, this route should horrify you for a number of good reasons.


May this help someone in the future. Also, for the record: I'm using Altium 15.1, in case this answer becomes stale sometime in the future.