The Ubuntu 9.10 "Karmic Koala" Beta version is released on 01 October 2009 and available for download.
Here is manual to add Songbird to your Software Sources list and to install it using a Terminal command line.
The Ubuntu 9.10 "Karmic Koala" Alpha 6 is released on 18 September 2009 and available for download.
The Ubuntu 9.10 "Karmic Koala" Alpha 5 is released on 4 September 2009 and available for download.
The Ubuntu 9.10 "Karmic Koala" Alpha 4 is released on 14 August 2009 and available for download.
The Ubuntu 9.10 "Karmic Koala" Alpha 3 is released on 23 July 2009 and available for download.
The Ubuntu 9.10 "Karmic Koala" Alpha 2 is released on 12 June 2009 and available for download.