The playback interface was missing in my previous version of the BBBRadio. So I added it using wxMediaCtrl.
Below is the updated screen for main GUI of BBBRadio.
Click on WavPlayer to open the interface to the media control.
The media control interface consists of simple elements such as
Open File - for opening the file
Filename TextBox - for displaying the filename
Delete - for deleting the file displayed on the Filename textbox
Play - play selected file
Pause - pause the current playback
Stop - Stop playback
When user clicks on "Open File" button he gets similar window as shown above which by default locates the "records/" folder under BBBRadio.
Waoh!!!! Now BBBRadio feels complete!!!!