I admit that I am heavily reliant on my mp3 player (Creative Zen, 30gb). It goes everywhere I go... and I mean EVERYWHERE, ever. Nowhere would it be more appreciated than on long train / bus rides across Europe. HOWEVER... It comes complete with a rechargeable non-removable battery. It can charge only via North American wall outlets, or the USB port on a computer. I'll be on a 7+ hour flight from Toronto to Hamburg, after which point my battery will probably be dead. How do you guys charge your mp3 devices when on a long trip such as the pilgrimage to Wacken? What's the best option - something like this (assuming I can find one in Ontario)?