Flash theme commonly used at W-series phone which have swf standby screen and swf menu and Walkman 2.0 is advanced media player altough the standard media player you found at K-series phone is called Walkman 1.0. The Walkman 2.0 have more abilities for us to look for our song more easily, instaling ? yes it was very easy if what you mean is the Walkman 2.0 skin but if you really mean installing the player to your non W-series phone, well that is impossible cause it was embedded in W-series phone main.

Regards