I bought a new iPod touch this week. But, I've been using a nano for the last two years with an iPod dock, and the sound comes out perfectly. When I put the touch in the dock there's a loud buzzing underneath the music. I put it on airplane mode because I thought it might be interference from the wifi, but that didn't make a difference. Not a huge deal because I can listen over the internal speaker or through headphones, but the battery drains so quickly I have to charge it twice a day, and it'd be a lot easier if I could just leave it in the dock.
EDIT: I should mention the make and model of the iPod dock. It's a Philips SBD6050.
EDIT: I should mention the make and model of the iPod dock. It's a Philips SBD6050.