Our custom-built bridge combines oandas pricing and execution with mt4s charting and analysis.
To sign into oanda mt4, enter the account number and password associated with your mt4 sub-account, and then select the server you would like to access.
I would figure out what you want out of your trading platform first and then go from there. If you cant get fusion to work (it should), you could also try the excellent free virtualbox which works identical to fusion (emulation).
Mt4 magically pulls down all of the servers for oanda and you can pick one just like you do in oandas official mt4 for windows. If you open up the finder, hold down alt-option, then go up to the go menu item, you will see a new menu item called library which is normally hidden (alt-option un-hides it).
I want to install oanda mt4 on os x using winebottler but cannot get the winetricks configuration quite right.