Streams on radiomast.io

[daedlo]

I am trying to add some FLAC streams to my radio playlist located on a QNAP NAS. I have been successful to some extent. However, I am unable to play two streams which are hosted by radiomast. These are:

http://streams.radiomast.io:80/radioblues-flac
http://streams.radiomast.io/tmefolk

Both of these play if I enter them into a browser.
I have tried with and without MinimStreamer. I am using a Linn Selekt DSM so there should be no compatibility issues.
Any pointers would be appreciated.