The main difference in 1.9 version is that now it uses "id3tag" instead of "mp3info", making its files much more interoperable with iTunes. (But 1.8, which I released last month, had a whole bunch of performance improvements.)
I just released a new version of Gronk. Do any of you besides waider actually use it?
Current Music: Nine Inch Nails -- Sunspots ♬