First, from a mains jumper situation, there is the old version and the newer version.
The newer version does not have jumpers and looks as below:-
If yours looks like this with the grey transformer next to the red socket, then it is 220 volts and NOT changeable.
If yours is the older version, then it has three jumpers as below. The bottom picture is an enlarged part of the top where the jumpers are located.
By changing the jumpers you can set it to 120 or 220 volts
The software can be ordered from your B&O dealer and plugs into the socket shown above.