The Readme.txt I linked doesn't show options for tags and EAC doesn't natively support tags for mp4/m4a.
You could tag after using mp3tag
Or you could add another program to the compression options to do the tagging
I tried AtomicParsley
You would need to change the compression program to
c:\Windows\System32\cmd.exe
and the Additional command line options to something like
/c \path\to\fhgaacenc.exe --vbr 4 --ignorelength --quiet %source% %dest% && \path\to\AtomicParsley.exe %dest% --overWrite --artist "%artist%" --title "%title%" --album "%albumtitle%" --year "%year%" --genre "%genre%" --comment "%comment%" --tracknum %tracknr% %hascover%--artwork "%coverfile%"%hascover%
You'll need to fill in the correct info for \path\to for your system
for testing I used
/c c:\fhgaacenc\fhgaacenc.exe --vbr 4 --ignorelength --quiet %source% %dest% && c:\AtomicParsley\AtomicParsley.exe %dest% --overWrite --artist "%artist%" --title "%title%" --album "%albumtitle%" --year "%year%" --genre "%genre%" --comment "%comment%" --tracknum %tracknr% %hascover%--artwork "%coverfile%"%hascover%
If there are any spaces, you'll need to add "" - "c:\fhgaacenc\fhgaacenc.exe"