AU will no longer support AU Music Port. They have moved on to new software, named Lismo Port (presumably enhancing their tie-in with the Lismo online media service).
I have yet to play with it, other than to attempt an installation. Bad news, it absolutely refuses to install on a non Japanese OS (not even with the trickery involved to install AMP). So I will have to play around with this more. Honestly, I am very likely going to move on to a different phone set anyway. The 42/52 Walkman phones are getting old.
Anyway, since AMP is no longer available on the AU site (nor the USB drivers?) I have put up a page on my own site to hold old CD versions of the software. I don't take any responsibility for a broken system if you choose to upgrade from the old (ca 2006) CD versions.
You can find them at: