It could have been something like
Taumatawhakatangihangakoauauotamateaturipukakapikimaungahoronukupokaiwhenu
https://www.newzealand.com/us/feature/the-longest-place-name-in-new-zealand/
Can you think of some others you find difficult to pronounce?
I am looking to replace the current application I am using to rename downloaded TV episodes.
This is what I use now : http://code.google.com/p/mediarenamer/
Any suggestions for something newer?