I READ WHERE U SHOULD NOT RECORD OVER 30 MINUTES OR SLOW DOWN LOADING,SO IF I MAKE 2 -30 MINUTE RECORDING ON SAME CHIP ,IS THAT OK OR SHOULD I USE 2 CHIPS ,AND HOW DO U STOP IT AND RECORD SECOND HALF.ALSO CAN I MARK WP WHILE RECORDING AND NOT LOSE ANY RECORDING OR DO IT STOP RECORDING BOTTOM,SORRY FOR DUMB QUESTIONS