Fortunately the Internet came to the rescue (see here), in case the file there gets knocked off of the file host I’ve decided to host the files myself here: Sony Ericsson W960i iSync Plugin.

All you need to do is extract the contents of the zip and place the entire ’Contents’ folder in the following directory under Macintosh HD:

/library/PhonePlugins/SonyEricsson_W960i_isync_plugin_v1_07.phoneplugin/

Restart iSync and you should be able to connect to the phone, it worked a treat for me and I even received a call whilst the phone was in the middle of the sync and the call had the real contact’s name on it!

I will submit a more detailed review soon but for now it’s worth noting that the aside from the lack of an iSync plugin (which I’m certain will come) the W960i does work as a Mass Storage device out of the box and charges from USB so whilst there’s no actual software it’s Mac-friendly enough that I can get away without switching on the dreaded Beige Box in the corner.