I heard one place in London was selling something like that, a revival ghetto blaster look for ipod, if thats it - they went abit ugly on it the thing too many colours and buttons.
check this out.
I think it's an ideal thing to carry when flyering coz atleast the people will hear the music policy that is gonna be at the night on the flyers that your trying to give them.
check it out.
click through the 6 pages and be amazed .
http://metku.net/index.html?path=mods/ghettoblaster/index_eng