'audible' '.aa' files: how to 'activate' device?

Thanks for this - just tried installing ‘Audible Manager’ for MacOS  - and it seems Audible (Amazon) have pulled this download from their webpage - saying:

Mac users using iTunes do not need to download any additional software.
Audible files will download directly into iTunes.

I tried dragging and dropping the file from the iTunes window itself to the Clip Jam folder - this copies the ‘.aa’ file just fine - but the same message pops up  on the Clip when I try and play it.

I checked the original ‘.aa’ file (with ‘shasum’) before I imported into iTunes and after I dragged-dropped to Clip - same checksum.

So the file hasn’t been modified in any way, and (apparently) no other communication between the Mac (via iTunes or otherwise) and Clip took place to ‘activate it’.

So I think Audible have left Mac Users high and dry unless they are using pure Mac/Ipod combination.

I have access to a Windows Machine - and this platform apparently still has the ‘Audible Manager’ software available, so I’ll give that a go.

Shame they (Amazon) didn’t create a Linux ‘Audible Manager’ while they were at it…

Thanks,

John