One of the things I really like about Mango is that it comes as a single binary that 'just works'. I see you are planning to get the user to supply the path. On a separate note about your future cbr support. Not sure if this is the right place for it but figured I would post and you can decide if it's useful / should live somewhere else. By default it will not delete the original files so it should be reasonably safe to use. As a workaround, I wrote a bash script to convert my library so I could get a better feel for how Mango will work. I have a quite a lot of CBR files so this is a bit of a blocker at the moment. I see you have CBR support already planned.