Following on from last year’s stories of the Prophets theme, Mufti Ismail Menk is back in South Africa this Ramadan (in Polokwane this time). The theme of his talks this year is seerah (the life of the Prophet Muhammad s.a.w). You can find the videos and audios at Muslim Central
If you know of any other sites linking these, feel free to add them in the comments.
slip-sliding away..... 
They also have it listed on http://www.ctme.co.za/ramadaan-20121433-lectures/ and mobile phones can listen or download it drirectly on their cellphones http://m.ctme.co.za/mufti-menk/ 🙂