The advertisements for the Sony HAR-LH500 are misleading; ie they indicate the necessity to use an external interface, eg the PC-Link kit. The LH500 does not need this, the computer interfaces directly to the USB input on your recorder.
I have the driver, should you not find it - my email address is:-
However I think you should be able to get it from the Sony website. I’m going there myself to see if I can get a more recent version of M-crew.
I’ve just bought one of these recorders from eBay; it’s been a while since I used one, a previous purchase, again on behalf of a friend. He has especial difficulty using this machine being visually impaired and finds it impossible to make out the titles since they scroll across the screen too quickly for him.
I have to say, from my brief re-acquaintance with the LH500 verion of M-crew, it doesn’t look quite as inviting or intuitive as the one for minidisc; which is saying something !
Please get in touch if you want any more information.