I just downloaded and installed VirtualMidiSynth on my Windows Vista machine from the following link: http://coolsoft.altervista.org/en/virtualmidisynth#download

; then I downloaded 3 different soundfonts - the one I preferred was Timbres of Heaven from here: http://midkar.com/soundfonts/index.html

Excellent playback.

Years ago I had tried and used BassLibrary but this is much better (IMHO).

Thanks for the suggestion Matthieu.