You can install the dedicated software for the camcorder from the following URL.

For Windows: http://www.sony.co.jp/imsoft/Win/

For Mac: http://www.sony.co.jp/imsoft/Mac/

Music Transfer

Music Transfer allows you to change the music files that have been supplied with your camcorder to suit your tastes, or to delete or add music files.

Furthermore, this software can restore the music files that were supplied with your camcorder.