It's missing an osso_initialize (), hence the crashes after 2 mins.

Do something like:
#include <config.h>
#include <libosso.h>

osso_context_t *osso_ctx = osso_initialize (PACKAGE, VERSION, FALSE, NULL);
g_assert (osso_ctx != NULL);

*after the program has ran*

osso_deinitialize (osso_ctx);