Here is an idea for the new DSO. Wouldn't it be easier and better to fix/update DSOrganize if it was modular? For example, you would strip all the apps from its code (except for File Browser). Each apps would be external and it's own file, instead of internal and being integrated to DSO as one file, therefore you (the user) would would be able to choose what app would load with DSO. Also, with this method, it would be a lot easier and quicker to fix/update an app if needed to, instead of fixing/updating the whole program (DSO).
Also, I was wondering, does the .SID file player exist in your version?