There are two different podcasts that you may subscribe to in order to automatically receive new shows straight to your mp3-player.

Podcast 1: African hip hop radio @ FunX Lijn5 (weekly 3-hour show, partly in Dutch)
http://feeds.feedburner.com/J4_GMB_DJ_Threesixty
Subscribe to this podcast: click the link to visit the Feedburner page and simply select the ‘Add to Itunes’ link.

Podcast 2: Africanhiphopradio international (monthly, English & French)
http://phobos.apple.com/WebObjects/MZStore.woa/wa/viewPodcast?id=257334687
Clicking this link will open your Itunes software where you will be given the option to subscribe to African hip hop radio and download previous episodes.