My iPod Nano 6G stops playing music when the display turns off either by time, or by pressing the "Sleep/Wake"-button. This effect is fully reproducible but only appears with certain headphones, namely:
Sennheiser CX 1.00
JBL Synchros S100i
With several other headphones, the iPod keeps playing music when the display turns off.
Any advice how to get those headphones working with the iPod?