Hiya,
This item is the holy grail for Rick Astley fans - if anyone:
a has it
b has the mixes in mp3 format
c wants to sell it

Please contact me here a.waterhouse@btinternet.com

Here are the details...

Don't say goodbye
1988 - Released in Italy

Tracks
Don't say goodbye - Latin Rascal's Remix - 6:18
My arms keep missing you - PWL House Mix - 6:38
RA House Megamix - 15:02
Includes No More Looking For Love, Don't Say Goodbye, Together Forever, Never Gonna Give You Up, Whenever You Need Somebody