I suspect an undub would be found on PC really soon. The game was originally for Japanese PC.
Maybe not, it sounds like they had to redo a lot of the data structuring and coding for this port: http://xseedgames.tumblr.com/post/92769039590/xseed-blog-the-legend-of-heroes-trails-in-the-sky
Since I don’t know a lick of Japanese, any undub would be an inferior version in my eyes anyway.
The undub is supposedly here. Warning: I don’t know if this link works as intended, haven’t tried it myself- it’s not a big deal for me. Looks like it does.