Yeah in the case of someone with only 1 wallet setup, the commit only effects the askArrow and gives you a new --debug-live=false option which will force it INTO simulation mode at runtime.
If you have multiple wallets it will just run the same algorithm (in different threads) on all of them. There is nothing to configure, just add a wallet at MtGox and restart the application. It will start trading the new currency in about 10 minutes.
I've also discovered, that MtGox may get a little slow to fill the orders, or at least update balances. I checked my balance 10 seconds after I shut the bot down and had no bitcoins, but 15 minutes later I had 0.84 BTC (and a whole lot of CAD & RUB as well).
If I were to sweep everything to BTC at this moment I would have 6.1 BTC so most of my initial loss was just orders caught up in the system. In otherwords MtGox balances may be delayed.
FYI you will get a massive performance increase on this app the more cores you have. Each Ticker runs it's own thread, each observer is in it's own thread. I'll probably add a thread pool to manage the super short lived agents since the current design is death by a thousand paper cuts. (thread creation overhead is too much on these shorter lived ones).