RTP Multicast to Snom Phones

Yup that much i've done before ( setting the rtp ip:port in the multicast area and enabling it).... it's making the correct rtp stream that is the hard part....
I've tried vlc , cvlc... both windows and bsd...

According to some wikis, a PCM 8bit 8KHZ mono RTP incapsulated stream is what a snom will accept..

i've tried from Windows with
.\vlcportable.exe -vvv .\ysubm.wav --sout "#transcode{acodec=alaw,ab=64,scale=1,channels=1,ar=8000}:rtp{dst=224.168.168.168,port=34567}"

but that would be inpractiable as I would prefer it from the bsd box running the phone system so that I can control the output...

On the snom phones, you need to turn on the multicast support and also, have to setup the multicast ip and port. Check out snom's wiki for the detailed help - http://wiki.snom.com/Web_Interface/V7/Advanced#Multicast

Has anyone been able to get this working correctly ???? I've been trying VLC but to no avail.... I have managed to get the phone to show that it is recieving a stream from a VLC server serving an RTP stream but no sound.... help !!