If you already own a pair of headphones for your computer, you can use this adapter to make them work for your phone.

http://www.amazon.com/Headset-Buddy-Adapter-PC35-PH25-Computer/dp/B002D41HKS/ref=pd_sim_pc_1?ie=UTF8&refRID=0JC8V8WZYC1988ZYAWYM