A long time since my last post, but better late than never.
I also had requests for video versions of the songs to play with Windows Media Player, Classic Media Player and also on MACS, iPhones, iPads etc. After much investigation and experimenting, I settled on MP4's as the best way to achieve this. The videos are high quality with the backing music and the synchronised lyrics and chords, all in the one MP4 file. They will play on lots of different platforms including MP4 compatible DVD players and TV's. They are also a reasonable and practical size to download and to store. There are many different video formats, some of which create incredibly large hard-to-handle files. The MP4's are relatively compact and very suitable for the display and highlighting of synchronised words and lyrics.
It is now just a matter of steadily producing them and making them available on the website. They are available in sets of five songs and include a PDF book which has each of the five songs with the appropriate GCEA Ukulele chord charts on the same page as the lyrics.