I've had PS3MS running quite a while. I was so impressed I even made a donation (which is unlike me).
It works flawlessly with the PS3, I've evn connected to it from my iphone via wifi and it works.
However, I'm struggling with an Xbox360.
PS3MS can see the Xbox, and I can browse to the media folder from the xbox.
This is where the problem starts.
I can see the root folder (music)
I can see the sub folders (A, B C etc), but I'm unable to see anything after this ??