No gapless playback if it's like the W910i
I've got a W910i and it's a great phone but not a good music player since, like Sony's other current MP3 players, it doesn't do gapless playback.
If Apple (with the iPod) and Microsoft (with the Zune) can implement gapless playback, and considering that Sony *used* to do it with their ATRAC players, it doesn't seem too much to expect things that carry the Walkman brand to do it as well. Sadly they do not.
Shame, though the rest of the W910i works great.