That's an interesting one pavane. I've not seen at attempt at converting W: to w:

All our abc for songs is w: aligned for the first verse and chorus. We add W:s to provide the full lyrics.

While here...

It was mentioned elsewhere that it should be pointed out that this download does not contain all our abc. We operate some things as abc projects instead. These can be downloaded and are found at here. Currently we have all the tunes from Hugill's Shanties of the Seven Seas, a selection of abc conversions from The Gloworms Tune Library and a fraction of Bronson.