Page 9 of the user manual from http://www.samsung.com/nz/support/model/UA32C4000PMXRD tells how to connect to an audio device.
In stead of a headphone most likely you can use any amplified speakerset that comes with a similar jack, like the average computer speakers.
I purchase a Samsung LED TV model no. UA32C4000 PMXXS 2 years back from Singapore. Its soundbar has gone bersk. How can I connect external speakers to it? Please help.