Usage:

flactag ARTIST TITLE -- *.flac

Example:

$ flactag ARTIST TITLE -- *.flac
CD01TR01.flac ARTIST []: Tiffany
CD01TR01.flac TITLE []: I Think We're Alone Now
CD01TR02.flac ARTIST [Tiffany]: Yazz
CD01TR02.flac TITLE [I Think We're Alone Now]: The Only Way Is Up