Don't worry, bro. Soon, your people will discover Copper and a new age will dawn. After the Copper (Chalcolithic) Age will come the Bronze Age, followed later by the Iron Age. I'll give you a tip to give your people a leg up when the time comes - in the absence of native zinc it will be possible to make brass by mixing ground smithsonite ore with copper and heating the mixture in a crucible. The heat will be sufficient to reduce the ore to metallic state (but not melt the copper). The vapor from the zinc will permeate the copper to form brass, which can then be melted to give a uniform alloy. Then you'll be able to make brass instruments, and maybe a few generation later, you'll discover electricity and combine it with guitars to make (it sounds crazy, but it's awesome) electric guitars. Now you can appreciate the genius of "The Blues Brothers".
It might take 15-20 generations for your people to evolve to the necessary point to understand the movie, but I promise you that it's worth it.
somewhere in there, I hope your people evolve past homosexual innuendo as the apex of humor.
It's a brave new world, and we're all pulling for your more-evolved offspring to join it.
