Cannot stream from my Mac with lion os 10.8 to WT TV live - please help

Does anyone with mac running lion os 10.8 knows how to stream to a WD TV live?  Thanks a lot!!!

The instructions on the link below are for Mac OS 10.5/10.6 but see if they work.

these instructions are ok for 10.5 - 10.6 but Apple has changed something on 10.7 and afterwards and there is no connection - I am wondering if someone has found a solution!