Shrug. Wouldn't that be taken care of by the "Requirements" statement of your game? Wouldn't that dismiss that 10% and thus you don't have to worry about it (as much; even if you say "P4 only", there is always that CS call from a "386" user who can't understand why it doesn't work)?

But an excellent point about the ogg driver. Even moreso than Media Player, isn't it's drivers added to the resourced version and thus an example of how this might work?