@Logicfest -- this problem also pops up if you are streaming a lot of files. A lot of wireless router manufacturers brag about having USB ports so someone can attach hard drives and stream data. What they don't mention is that you are limited to the number of files you can index on that router.
Let's say your DVD ripping consumer decided to do the same thing with his massive compact disc collection. If your router is limited to 5,000 files it can index (i.e., find), then that person could be out of luck if the CD collection is huge. Sure, you can dump maybe 100,000 songs on that hard drive, but you can't access them if the router can only find 5,000 of them.