Recently, clothing products equipped with information devices to provide various types of information to the person wearing them have been commercialized. In the case of clothes using IT devices, a general method is to manufacture a circuit to transmit input signals and a connector to connect communication devices to additional devices, that are manufactured separately from the clothes and attached. These designs includes the circuit between the outer garments and lining. Therefore, they are applied to jackets with certain volume limitations. In addition, it is also troublesome that a separate process is needed. On the other hand, this problem can be solved by connections with an IT device via the embroidery of conducting yarn. Accordingly, in this study, sewing and embroidery to provide a signal transfer route for sound source data and a connection between information and communication devices and input/output devices conveniently were examined. An electrically conductiing thread made by coating with silver on 200 denier and 48 filament nylon thread was used as a sewing thread. The Vrms(voltage-root-mean-square) displaying the average value of the sound source through 2 types of stitching, 70 cm in length, on 100% nylon as the sewing thread was measured to determine the amount of sound and data loss. Based on the data, the stitch, 70 cm in length, sewed overlapping 5 times, and the end point was connected to a snap and applied to the cloth to attach to a mp3. The use of conductive yarn as embroidery yarn, can allow the transfer of sound sources without limitations to the clothing design. Accordingly an expansion of applications of smart wear is expected.