Q: I have a third-generation iPod touch and an iMac and am using Snow Leopard. When I sync the iPod touch it will not transfer playlist folders, only the playlists contained within these folders, unlike my iPod nano and my iPod classic. Is there a solution to this problem?
A: Unfortunately, this is simply one of the differences with the iPod touch and iPhone from the traditional iPod models. In fact, playlist folders were actually introduced to the other iPod models some time after they first appeared in iTunes itself; despite playlist folders being introduced with iTunes 5 back in 2005, it wasn’t until the fall of 2007 that playlist folder support became available on the iPod itself, with the iPod classic and the third-generation iPod nano.
It is uncertain whether Apple intends to bring similar support to the iPhone OS, but you could certainly submit a feature request at Apple’s iPod touch Feedback Page.