Slightly confused... this is sold by 5.1 marketing but is only 2.0 RBCD? Despite invoking the name of Brad Miller?
The original LP released in 1966
was a PHILIPS release. All I recall at the time is the gorgeous music, sound effects, etc. but a very scratchy oppressive pressing. It didn't surface on CD for a very long time and then the Mystic Moods franchise shifted to HDS who under the DTS~CD banner released some subsequent Mystic Moods DTS~CDs. Then again, in the mid 00's, the early Philips Mystic Moods records were released, remastered, under another label.
From reading Mark Anderson's rumored QUAD discography, it WAS stated that the Mystic Mood's Orchestra's One Stormy Night and their sophomore effort, Nighttide were both remixed into QUAD but AFAIK never released [probably akin to the Philips Classical QUAD masters which were never officially released, even on vinyl, until Pentatone released them as part of their RQR series as QUAD SACDs a few years ago].
Confusing, YES, but if you like Easy Listening
PLUS music with an effective twist [i.e. well recorded sound effects], by all means try the One Stormy Night CD which is again available under the HDS banner .... and has been beautifully remastered for CD.