I currently work as a radio host. The job was not much good in the start but I have got a good status in society right now due to this job.
Radio job can be too much easy for u if u love it. If you want to give an audition u should have some of the points in mind.
1: The Selectors will check ur confidence not just by ur audition, but also by the introduction and talk that u will have with them in the office. They try to guess about ur skills by ur body language. So be confident in front of them. But not over confident. Feel like u r a happy and fun type person. This will give a reason to the selector to select u.
2: They also check ur voice quality. Do record ur voice and judge it urself and have some comments from ur friends as well. If you speak in a way that u speak with your best friend, then they are surely gonna select u. Do record ur voice before going for audition.
3: Topics and creativity are also vital. When u get on air you must speak and speak in such a way that others will be influenced by ur talk and start to love u. You can be a normal radio person but it really sucks, you will enjoy the job when others will start loving you and find time to listen to the show by skipping their other works just for ur show. Speak fun things but don't be a joker. Be serious once in a while to influence ur listeners. This has really helped me out.
4: Be in your listeners shoes, people want to listen to good music and hate to listen to a guy or girl speaking again n again. So speak not much not less, but enough to influence the listeners. Just think for a while what a listener wants to hear about or what will he enjoy to hear. In this way speak out by keeping listeners feelings in ur mind.
5: Good music is much more essential. Play different type of music as listeners belong to different ages and youngsters hate old music and oldies hate PSY type music. Play both types so that all will be happy.
As far as audition is concerned, speak to GM about the points that I shared. He will think that the person has a good sense of humor. He will trust you and believe me u will be selected.
(Sorry for the mistakes in English, not my mother tongue)
Aapke username se toh mujhe lagta hai k ap urdu ya hindi speaker ho. Phir b koi masla ho toh kabhi b msg karna. Mae tayyar hun help k liye. Khush raho jigar!