Audio Jack 3.5mm - PRT-08032 - SparkFun Electronics

Low profile 3.5mm stereo audio jack.

PRT-10363 SparkFun

Audio Jack - 3.5mm TRRS (SMD) from MindKits New Zealand

Surface Transducer - Large - COM-19102 - SparkFun Electronics

Codec Shield - DEV-11290 - SparkFun Electronics

3.5mm Audio Jack Adapter - RobotShop

PRT-09536 SparkFun

3.5mm Audio Jack Adapter - RobotShop

Catalog Modules Sparkfun, PDF, Light Emitting Diode

Electrolytic Decoupling Capacitors - 1000uF/25V - COM-08982 - SparkFun Electronics