I too am interested in a response to the previous post. I use Spiceworks http://www.spiceworks.com/app/ to monitor and inventory network devices. It interrogates devices through Simple Network Management Protocol (SNMP), Windows Management Instrumentation (WMI), or Secure Shell (SSH) to report on them commonly using the login credentials for the device. My Sling 500 appears to support SSH and may be Unix based however, Spiceworks cannot access the device using my login credentials.
Would certainly appreciate knowing more about Slingbox tech specs to address accessing the Sling by my software.