Sorry about my misinformation.
I have the non-NetMD predecessor of the MZ-N505, the MZ-R500PC - which did not come with an AC adaptor, couldn't recharge batteries, and had no provision whatsoever for a remote control. It had a Xitel AN-1 PC Link, however.
However, if y'all said an AC adaptor and remote-control/battery-recharge capability comes with the MZ-N505, I may consider buying one. I've learned that all Sony NetMD Walkman recorders come with an AC adaptor, a USB cable, OpenMG software and a blank 80-minute MD; the 707 also comes with a nifty charging stand (you plug in the unit's bundled AC adaptor into the charging stand instead of the MZ-N707 unit itself, and just set the 707 with its NC-AA battery onto the charging stand) and includes an optical connecting cable (but it may not come with the proper plug end for all output sources). With the 505, you'll need to plug in that unit itself in order to charge Sony's optional NC-AA or NH-AA rechargeable battery, and you'll also need to buy a connecting cable.