Bird calls for South Africa

Hi birders
Could anyone recommend an app or a collection of bird call recordings I can purchase before my trip to South Africa in June next year?
Ideally I’d like something like the old BOCA CDs where a person names the birds before the calls are played so I can just listen over and over without having to click on each species just to hear calls. It would be great for my bus rides to work.
I hope to start learning calls sooner rather than later. 
Thanks in advance
RegardsÁkos

Sent from my Samsung Mobile on the Telstra Mobile Network