I was interested to read your details about Getjenge radio station. You may already know that we are working on FrontlineSMS:Radio - a tailored version of the software optimised for radio DJs. Its currently in a closed beta with 3 stations but we will include more stations early next year. For more information, checkout http://radio.frontlinesms.com.
I am interested to know how your radio station interacts with the audience? Do you mostly use text message / voice calls / station visits? How many SMS do you receive a day? Is there a particular show which promotes more interaction? Do you ever run polls?