Wow. I actually got it work by copying and pasting the codes; never did that before.

HOWEVER, can't get the "volume up" to work. Tried pasting the code but it didn't work, so I copied the volume down code and manually changed the different 4-digit codes. That didn't work either. So I manually and tediously entered each of the 4-digit codes that comprises the volume up command: nothing.

Will try again tomorrow, unless someone spots my problem here. Otherwise, again thanks to everyone for their input. Not going to give up yet.