Which model do you have? The LEDs tend to have fewer sockets, and no direct analogue audio output - only a digital optical one. You need to check your manual. If there is a separate audio output, it will be marked "Audio Out" and will have either a 3.5mm stereo socket, or a pair of RCA phono sockets marked "L" and "R" - you can get cables for either to connect to the Bose 3.5mm socket.
Otherwise, you may be able to use the SCART socket. The LED uses a proprietary outlet with an adaptor to a SCART plug. I don't know if this supports audio out, but if it does, then you can get SCART adaptors that will give you the RCA phono sockets.
If none of these will work, you might want to consider a receiver with optical input for the TV and a dock for the iPod. There are Home Cinema systems with that capability.
Headphones will not work on this TV without a separate receiver.
i have a problem trying to get headphones to work with this tv...
we wanted to buy a BOSE dock for our ipod today, this dock also has an auxillary socket to plug to the tv which is great but how do i get it to work?? ive tried my headphones before i shell out 250 pounds for the dock but had no luck...