The hash is individualized. Install firefox add-on
RefControl 0.8.16. Then add entries as follows;
Code:
Site: ida.omroep.nl --- Custom: http://www.npo.nl/
Site: livestreams.omroep.nl --- Custom: http://www.npo.nl/
Then request new hash url from;
Code:
http://ida.omroep.nl/aapi/?type=jsonp&stream=http://livestreams.omroep.nl/live/npo/tvlive/ned1/ned1.isml/ned1.m3u8
Remove all extraneous "\" from the result. You may be able to remove "&protection=url" from the end to get a usable url without the urishieldv2 protection feature.
See also
this thread for non-live content.