Sony PCV-RS710G - Vaio Desktop Computer User Manual page 114

Why do my optimized music files take so long to appear in My Music?
When you use SonicStage software to optimize music files to ATRAC3 or ATRAC3+ format, it may take a few moments for
the music files to be available in My Music. To access these files sooner, start Windows Media Player software first, and then
play the song with My Music.
Page 114