virtual uint8_t play( uint32_t len, uint8_t *data ) { assert(0);return 0;}
virtual uint8_t play( uint32_t len, uint8_t *data ) { ADM_assert(0);return 0;}
	    		virtual uint8_t play( uint32_t len, uint8_t *data ) { assert(0);return 0;}					    	 