1 Save the current position not only the current song?
2 Create other menus (Radio, general preferences)
4 CD support. cf:cd_cdio_VERSION.gem
5 Check audio formats supported by gstreamer. -> Depends on gstreamer plugins!
6 Support other playlist formats (xspf,wpl).
7 Create a Ubuntu package. -> Add ZiK.desktop -> ruby-pkg-tools
9 Pop-up window to show song name. (notification)