Hello Garvan,
1. Not for the moment. I only reload files that are part a project - files visible in the treeview. Once I figure out a way to specify build rules for add-in file types, it should work.
2. You should be able to use 'Add files to project'. If it's a text file, and not ends with one of the supported extensions (.C, .H, .ASM, ...), it will be added under 'Other files'.
Pelle