The Mac client should be available "real soon now" ™ ® ©. :-)
Until then, there are two possibilities, one is Virtual PC if his Mac has enough power to rum Win2k or XP at a half decent speed - I use Win2K in a vmware instance on my Linux box and it works perfectly OK.
The other possibility is though windows media encoder. Look around the forums here, and you'll find all the necessary info to enable your PC to "bounce" the Sling stream. You will need a computer with a bit of power to do it properly.
Even though I don't have a Mac,I am SOO looking forward for the Mac client; I am hoping that the Linux client will follow soon after that.
"Good behavior is the last refuge of mediocrity." - Henry S. Haskins
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