I hope I didn’t waste anyone’s time trying to figure this out, but I was able to get it to work by simply reviewing LiveCalendar’s code a little more closely.
In the ‘kcalendarscript.php’ file, I noticed that instead of an ID, ‘today’ was made a class. My stylesheet needed to be:
#wp-calendar .today {
font-weight: bold;
}
I’m posting this here in case anyone else runs into this similar situation.