- save burning speed in config file (if default speed, do not save, it's easier?)
- check if used space is not always refreshed even if advanced option says nope
- Show space left for multi-session DVD (-dry-run option?)
- DAO support when burning from files
- The "delete files/folders" and "clear list" should be disabled if no files are in the text view
- Burning simulation support
- Solve problem with freebsd strange naming of tcl/tk interpreters