Though they are portable devices, the iPod and the iPhone can make a wonderful source for headphone-free music when connected to a speaker--if you have a player full of great music and personalized playlists, you might as well play it out loud every once in a while. Unfortunately, several of the made-for-iPod systems that have come out in the past few years don't work well with the iPhone, presenting a problem for those with multiple devices.
The upshot is that manufacturers have started to address this issue with iPhone-friendly speaker systems, which are shielded against cell phone interference and thus let you use one audio solution with all of your devices. One such gadget is the JBL On Stage IIIP, a $150 portable-speaker unit designed to put the music phone on display. It's not the boomiest of the bunch, but its small footprint and understated design could make it an appealing option for some..