Find Leaks Obj-C function

I made this project, works fine but after many hours get quit because of a leaks Instruments mark me where is the problem but after I made the change i get EXEC_BAD_ACCESS message, I'm no expert in obj-c so I guess is something simple that overpass my small knowledge of the lenguaje you can download the project test it and when you have 0 leaks and after many hours you dont get a growing memory you have the job the project need internet connection for get the XML and mp3 files regards!