You can edit the preferences file in USER/.prefs/tales-of-androgyny-preferences, change the width and height values to something smaller. It's weird, because the options should pull from your monitor resolution options - what was the large setting that was too big for your monitor?
Viewing post in Unplayable bug/Something that could use a fix
Yeah, I'm gonna add one of those, but it auto-detects your monitor's supported resolutions so it should really never be a problem. It's especially a problem because I default it based on those supported resolutions, and some people have the problem immediately before they can set it (although hard to tell how many of those reports are from before the auto-detect feature was put in)