DSW1958  Playback is a compelling app and seems to be what I have been looking for. It is supposed to be plug and play and users comments have indicated that it is but my experience is that I have to turn off the firewall in order for my PS3 to see it. It is in the list to allow incoming connections but this appears to mean nothing. This may be a SL issue or it may not, i have no issues with any other apps and incoming connections. I wanted to purchase this but cannot for this reason. If this issue gets resolved one way or another then I will likely purchase it.  
(Version 1.1)

DSW1958  I purchased MacScan through MacPromo and am still wondering why. All it ever finds is a few tracking cookies which I guess is good but I feel that it is not worth the price of admission. Version 2.7 came out and I thought I would see if anything was new or different but have been unable to get the update due to a consistent server error. Another annoying thing about updating is the process of having to go through a checkout process which is totally lame.  
(Version 2.7)