I've tried and tried. Here's where I'm at: Mac Pro tower running 10.6.5, latest Boxee Box release. I have internal SATA drives shared on my mac pro tower. I have file sharing on, I have SMB checked in my options box with two different user accounts with check boxes next to them. I've made sure that these users have Read or Read/Write access. I can connect to my SMB shares on a WDTV live (it prompts me for username and password) and I can connect to the SMB shares from another mac laptop after also typing in the username and password - both cases I can stream wirelessly any 1080p file without issue. I now have my Boxee Box on a wired connection to my router (for troubleshooting purposes). I go to Settings > Network > Servers - here I've tried web server on or off and I've tried having Enable Windows file sharing on and off but regardless the following happens when I try to add sources - it lists three options: "__MSBROWSE__(Samba)", "MEDIA (Samba)" this is the SMB share that I've set up on my mac pro, "UPnP". When I try to add "MEDIA (Samba)", the little wheel spins and then it says "Error Operation not permitted" without having ever prompted me for a username or password. How am I messing this up? I've tinkered with all sorts of different streamers not to mention consider myself quite tech savvy but I can't get it to see my gd SMB shares. Any help?