some NPO.nl url's are unsupported...

[MatrixView]

• I've verified and I assure that I'm running youtube-dl 2017.06.12
• At least skimmed through README and most notably FAQ and BUGS sections
• Searched the bugtracker for similar issues including closed ones

What is the purpose of your issue?

• Bug report (encountered problems with youtube-dl)

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Some NPO.nl url's seem unsupported... why is this, and can it be fixed?
Thanx a lot in advance!!!

$ youtube-dl -v http://www.npo.nl/radio-gaga/13-06-2017/BNN_101383373
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['-v', 'http://www.npo.nl/radio-gaga/13-06-2017/BNN_101383373']
[debug] Encodings: locale cp1252, fs mbcs, out cp437, pref cp1252
[debug] youtube-dl version 2017.06.12
[debug] Python version 3.4.4 - Windows-7-6.1.7601-SP1
[debug] exe versions: ffmpeg N-67388-g37425fc, ffprobe N-67388-g37425fc, rtmpdump 2.4-47-gc26c541
[debug] Proxy map: {}
[generic] BNN_101383373: Requesting header
[redirect] Following redirect to https://www.npo.nl/radio-gaga/13-06-2017/BNN_101383373
[generic] BNN_101383373: Requesting header
WARNING: Falling back on generic information extractor.
[generic] BNN_101383373: Downloading webpage
[generic] BNN_101383373: Extracting information
ERROR: Unsupported URL: https://www.npo.nl/radio-gaga/13-06-2017/BNN_101383373
Traceback (most recent call last):
File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmpkyaecyzu\build\youtube_dl\YoutubeDL.py", line 762, in extract_info
File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmpkyaecyzu\build\youtube_dl\extractor\common.py", line 433, in extract
File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmpkyaecyzu\build\youtube_dl\extractor\generic.py", line 2796, in _real_extract
youtube_dl.utils.UnsupportedError: Unsupported URL: https://www.npo.nl/radio-gaga/13-06-2017/BNN_101383373