Hi dear,
Yes, I had found and messed with that before.  I hadn't examined the console view at all, which works.  Like you, I won't use that Track>Properties>Volume thing because, as mentioned, I would increase the #, go back to the track, find no difference, go back to see the # was back to 0.  Doesn't matter. Don't need it, was just curious.
What the whole problem ultimately boiled down to was all of you showing me how to separate the tracks and their volumes. 
I still find it odd that volumes for the keyboard have to be turned so far up for some instruments, that the receiver drops out.  I am not hard of hearing, the volumes would not be considered excessively loud by any stretch, matching the piano track which  is much, much lower.  I can still manage just fine, thanks to you.
I did keep MC6 on my computer.  Had been told it would work better with Windows 7.  It made no difference.  I'm used to 5, but may use 6 sometime just for fun and a change.
Is it nice in Texas?  I'm way out on a point in downeast Maine.  We've had snow, but as I look out I see that the bay just below the window (tide's out) has lost its ice because the last 2 days have been so warm!
Do keep in touch and thank you for your thoughtfulness and generosity.
Sister
 

Sister - I wonder if your volume output of the keyboard is turned down?  if it's transmitting something less than 100 or 101 (default) then that would cause the softsynth to respond and make it much lower in volume than the acoustic piano track.

If that's the case then your MIDI TRACK's volume slider will show something lower than 101 when you start playing the project back. (in MC5 you'd need to open the properties like I showed you above in the pictures in order to see what it's set to).

as far as MC5 or MC6 - use whichever one you're more comfortable with!

Texas - weather changes every couple of days here!  it was freezing last week, this week it's raining and tomorrow it's supposed to be 72 degrees!  No snow - we don't get snow very often here, and there are many winters we don't get snow at all.  freezing rain, however, we do get!  and hail in the spring!

Odd, isn't it?  The keyboard's volumes have always been up as far as they will go.  As stated before, the only place I seem to be able to control volume noticeably is on the Sony receiver (STR-DH100).  This goes up to 70.  I record the piano at 30.  The music I am transcribing is quiet. Let's say I choose trumpet for a MIDI track.  At 30, it is barely discernible.  I go in to MC5, as you showed, and push it up to 6, its maximum.  Not much difference.  I go over to the receiver and push it up to 50.  Then it's audible.  Of course, I then have to go back in to the piano track and turn it way down.  Too, as I have said, altho I haven't done this often, the receiver will drop out protectively if I'm trying to record the MIDI with the audio. Can't handle it, I guess.   
However, you have been way too kind to use your time, and I can get along now  if I choose the instruments and try to balance carefully.  If I were a rock band, or wanted noisy drums and horns, etc., ....?Which, since I don't, doesn't matter. 
You are a professional musician?  Band of some sort, or solo?  A beagle singing?  Do you have a beagle?
Windrow Sanctuary is a wildlife sanctuary.  I am a Franciscan Sister.  Have 3 rescue animals:
Abbeycat, who lives in the oratory;  Katy, a mixed breed; and Chief, a Belgian draft horse.  I was asked to take the Belgian as he was near death from abuse, starvation and worms.  He is now healthy and very happy.
I appreciate all the attention you have paid to this problem.  Blessings upon you!  Sister
 
 
 

P.S.  If I play the MIDI instruments on the computer - you know, the little sample key things on both Soundcenter and  TTS1, -  it is louder  and clearer than using the keyboard on the same settings.  SrM

I have no doubts, sister, that if I were in the room with you we'd be able to figure it out in 5 minutes and say, "well that was obvious!"

but I must admit that I don't know what else to try at this point.

You are a professional musician?
No, an amateur.  I play keyboards in my church band and I sing and sometimes lead worship
Band of some sort, or solo?
Yes - see above! :-)
A beagle singing? Do you have a beagle?
I do not have a beagle and haven't had one since elementary school, but "Beagle" is my nickname.  It was given to me at a time when my life was very different than it is today!  Most of my high school buddies still call me "Beagle" exclusively.

I do love beagles, tho, they're great dogs! 

we currently have a Miniature Pinscher and he's a handful!  His name is "Scooby"

I'm glad to hear you take care of rescue animals.  that is a noble cause!

Blessings to you Sister!

It appears that her issue is related to the levels between the piano's volume & midi, which is disproportionate. The audio simply has a hotter signal than midi which is why the midi sounds so faint to her. She's using the amplifier's volume as part of the leveling process or as a mixer which is creating an issue.

The amps volume needs to stay at a fixed level because it's for the purpose of monitoring not mixing. The piano's volume level in the audio track simply needs to be turned down to match the level of the midi tracks. Recorded audio which has a greater dynamic range can easily overshadow midi.

A majority of keyboards have a changeable velocity curve. Different curves produces different dynamics that has an affect on volume. Some curves produce less volume than other types.  Maybe your keyboard is set on a curve that produces less dynamics? A linear curve seems to be a default on most boards.   

Maria.... part of the problem is we can not see what you have and what you are doing.  

One possible solution would be to have a friend or yourself make a short video zooming in on the inputs and outputs and where cables go and show all the gear, so perhaps we can make some sense of it. A phone can do the video recording easily. 

The video can either be uploaded to youtube (free and easy) or loaded to a site like dropbox or box.com and the link shared. That way, maybe we can see exactly what you're doing and offer the best advice to a remedy.  

Like this>>>  http://www.youtube.com/watch?v=3-OMoe9f8eI

just a thought. 

At the 30 of the receiver I can barely hear instruments such as flutes, strings, etc.  I will be recording on the MIDI track while hearing the audio track.  I cannot turn the receiver way up to hear the instruments, for the audio track will also increase proportionately. You see?  It is such a very simple thing I want to do.

I think her issue isn't at all complicated. Maria makes multiple mention about her receiver- [that she's using for monitoring] being at a volume level of 30.  She apparently hears her recorded piano track just fine at this setting but not midi. I believe she said she has dual mikes in her computer that she's using to record, which is probably recording a good hot signal level. 

She states that if she turns up the receivers volume in order to hear the midi instruments... then the recorded audio also becomes louder. It seems that simply turning down the recorded audio track would solve the issue, because it apparently is just too loud.  Another issue could be related to the dynamics setting of her keyboard. It may not be set on a linear velocity curve. It could be set on any number of exponential curves or possibly on a fixed level less than 127.