[gmurphy]

It does a client-side guess based on vowels, and then hits the server for an authoritative version. The server has a word:syllables map I derived from the CMU Pronouncing Dictionary.

In the "segue" case, it looks like the dictionary lists two pronounciations, one as 'seg', so it uses the lesser of the two. Not sure that pronounciation is valid, though.

Thanks to you and frosted-flakes, I pushed a fix for the back button issue - good catch, I appreciate it.