Not sure what CSEL is? Cable Select wouldn't apply to SATA devices. From what little I can find on the SVE14A1AJ Model Number, it's an i5 processor?
You should be able to swap your existing DVD drive with a Blu-ray one fairly easily. As long as your laptop has the processing power (if it's an i series processor - no problem there), and if the screen supports HD, then you just need the right size Blu-ray drive and the software to play Blu-ray movies.
Most laptops will use one of two standard size tray drives (Standard or Slim), or slot load. On the tray drive, there's a faceplate that matches the exterior of the laptop that can be removed and re-attached to the replacement drive.