i have a k550i flashed to w610i
it works flawlessly !!!

now coming to actual question " Walkman on Kxxx serie ? "

i like walkman... !
but i also like camera of cybershot !!!

Sony Ericsson will lose out to NOKIA if they don't come up with CYBERSHOT WALKMAN

Nokia n73 ME is a great music phone as well as an amazing camera...

with new N series phones.. nokia will beat SE... if SE makes two different line ups like Cybershot and Walkman..

i really hate SE for this !