Thank you to all forum members who provided some interesting thoughts and ideas. I have finally had success with a virtual midi synthesiser from the coolsoft website. This website claims to provide high quality midi playback but is mainly directed towards karaoke enthusiasts. Also, it didn't specifically say that it was designed for Windows 8 but I tried it anyway and it works fine. I can't provide a link but googling 'coolsoft' should head you in the right direction.
Under Tools>Options>MIDI tab :- What available playback devices are listed that you can use?
Barry Graham Melbourne, Australia
There are no playback devices listed. My old laptop which runs Vista has 2 devices.. the Microsoft midi mapper (which I used) and the Microsoft GS Wavetable Synth which was available as an alternative.
Help, please. I have just bought a new PC which has Windows 8 installed. I can't find a midi mapper to play back my Noteworthy files. I'm using Noteworthy 2.5.5.