The easiest way to establish a connection is to select Run from your Windows Start Menu, and type ‘telnet ‘ip address’ 4444′. Replace ‘ip address’ with your SoundBridge’s specific IP address.

Once connected you will see:

Welcome to the SoundBridge Shell version 2.1.20 Release
Type ‘?’ for help or ‘help <command>’ for help on <command>.

SoundBridge>

Typing ‘?’ or ‘help’ will display the following:

Valid commands are:
? - displays this list
help - provides help on a command
clear - clears the terminal window
stty - sets shell tty parameters
consoleprint - sets consoleprint on or off
version - prints out the software version
exit - exits the shell
cycles - displays a count of processor cycles
uptime - reports system uptime
reboot - reboots the system
ps - lists threads
irdump - toggles diagnostic dumping of ir commands
audiowarble - generates an audio warble.
audiotone - generates an audio tone (help audiotone for more help)
audioclocks - Report if the audio clock is running.
lcdbr - Allows setting of LCD brightness
ifconfig - lists network interface configurations
ping - pings an ip address
ipset - sets up a manual config
mfg - performs mfg tests
memstat - prints out memory statistics
htplay - plays back audio from a URL using CascadeHTTPStream
stop - stops audio playback
irwait - Wait for a specific IR command
romcheck - Print Rom Sizes
displaytype - Print type of currently connected DISplay
log - Dump the persistent log
logclear - Clear the log
attract - attract eyeballs
clearsettings - clears CascadeSettings and reboots
sketch - draw on the display
renameservice - engages rendezvous service renaming for conformance test

SoundBridge>

I don’t know much about this stuff but you can find more info about the telenet interface on i-hacked.com

Look here for information as to how to purchase a ROKU Soundbridge

I wrote a review of the Roku Soundbridge some time back.  I have one and love it!!