It seems that you're using an outdated browser. Some things may not work as they should (or don't work at all).
We suggest you upgrade newer and better browser like: Chrome, Firefox, Internet Explorer or Opera

I think one of Galaxy 2.0's shortcomings is that it doesn't have much customizability for emulators such as DOSBox, especially given that people oftentimes make their own configs and batch files for running the game how they like it. If we could get some tools for better DOSBox integration, that would be great.