Hello to you,
I too have a Thecus 3200 with 3 x 3TB. I currently buy a WDTV Live 3GEN and in my Windows Sharing, it is not available. I had a WDTV Live 2gen and my Thecus was available in the network share.
If you have a WDTV 3GEN, could you tell me how you did it to be visible in your Windows Sharing the WDTV?
Small note also, in the Media Server option, it is my Thecus NAS N3200XXX but not in the Windows Shares.