You can do it with the PS3?
I mean, I guess in theory maybe you could stream it from you PC...unless the file itself isn't even readable by your 360 because I think it'd have to be a wmv. file. I don't think mp4's or literally anything else can be picked up by the 360 unless some media server workaround is used. I'm guessing.
All of this should be way more steamlined, man. Seriously.