Many thanks, dorfmouse - there is a hive of fascinating information there and I will revisit it.
Good to hear about your wooden flute! Do let me know when it reaches you. I think you are very brave learning to play in traditional Irish style. (I also think you must have bigger hands than my tiny mitts as I could never manage the finger spacing!)
I'm so glad I took the plunge, and hope you are as delighted with your new flute as I am with mine.