Peter,
I performed some basic testing  with all 13 tracks from 1 album in the result list. I did Rightclick on Track 01 - ,Play Each - Randomly - Autoselect
The following happened.

- If I select 5 items, the fowwing tracknumbers are highlighted in the Library Area: 02,05,06,09,11. In the Playlist the following tracknumber appear (in that order): 12,13,12,10,01. As you can see it contains a duplicate (12). The selection in the Library does not match the selection in the Playlist Area. 
 
- If I select 10 items, the fowwing tracknumbers are highlighted in the Library Area: 02,03,04,06,07,08,09,10,11,12. In the Playlist the following tracknumber appear (in that order): 04,09,01,08,03,12,11,04,10,10. As you can see, again it contains a duplicate (10). The selection in the Library does not match the selection in the Playlist Area.

- If I select 13 items (=the number of tracks in the Library area) , the systems hangs. Checking Windows Taskmanagement shows that CPU usage by XXHE goes above 40%, and it stays there for at least 5 minutes. After 5 minutes, I cancelled the task XXHE. 

- If I select 15 items, the following tracknumbers are hightlighted in the Library Area: 02,03,04,05,06,07,08,09,10,11,12,13. In the Playlist area I now see 10,04,09,08,13,06,03,07,01,04,09,02,01,10,01.  And no hanging system!

I repeated the last test several tims, Rightclicking different Tracknumbers to start with,  and everytime the selection in the Library Area does NOT contain track 01.

I hope that this behaviour gives you a clue about what is happening.

Cheers, Eric.

Peter,
(this Post should go to a different thread I think)
for sure I know!!
Actually I was totally flabbergasted when I first played with double, AP. Stunning sound and very analogue. The best I have ever heard. Now the interesting point is that my first listening sessions were through my Weiss Medea which is an OS DAC. I am really curious if you will be able explain the logic of why AP sounds so excellent on the Weiss Medea. Of course, I also tried the No Oversampling option in XXHE and did all the comparisons between the DACs. I recognise everything that has been said about this on the forum, to the point that I discovered that some albums that I remembered as good recordings now appear as unbalanced to me. Some recordings now sound a little harsh in the mid-highs and flat in mid bass. I also recognise the findings about the soundstage. It is clear that AP forces me to revisit my reference points. Also your contribution on "what is true" appeals to me as true  . So I decided to postpone my judgement until I have been able to do more work on comparing the various combinations and possibilities. I will come back to this soon. One conclusion stands: I do not ever want to go back to 0.9y-3 or earlier. Just listen to Eric Clapton's Unplugged album and you will immediately know why. 
Cheers,
Eric. 

Peter,
no,no,
at the first click, the system does not respond at all and the Library Area is still displayed. At the second click, the systems "hangs", showing the message. After 20 seconds or so, the Playlist area is shown with the 20 tracks. The behaviour is exactly as you expect.
Eric 

Hi Peter,
the empty Playlist is caused by the fact that before I exited the previous session, I used the Clear function to make it empty.
Over the next couple of days, I will experiment with large and small Result lists, and create using Galleries or Original location. My time is limited until Wednesday, however I am confident that we will find out what is happening.
Thanks,
Eric.

Peter,
I followed your instructions. Here it is.
1) I open XXHE
2) I check the Playlist area. No tracks are in it, just the text XXHighEnd Vista, Model 0.9y-4.
3) I click the Library Tab.
4) I Rightclick on "F" at the bottom of the screen.
5) I Select a stored Result List containing Tracks. The number 11896 appears. I browse through the list if the tracks are there. They are.
6) I Rightclick the 1st track, ===> Play Each ===> Randomly
7) I choose AutoSelect LibraryItems, fill in "20" and Click "Go".
I click on Playlist. Nothing happens. I click once more. The message XXHighEnd 0.9y-4 shows up in the topline. After 20 seconds or so the Playlist appears with 20 tracks.

I hope this helps you to advice me what to do.
Cheers,
Eric.   
 

No Peter, the albums are not CUE files. There are 11896 tracks in the Library Area result list that I am working with.
This is what appears in the Playlist. 20 tracks (as requested by me) which I numbered topdown for this discussion.
When tracks originate from the same album,  I put them on the same line here below.
1
2
3 18
4 11 13
5
6
7 12
8 14
9 16
10
15
17 19 20

So the tracks come from 12 different albums. Moreover, tracks number 11 and 13 are not only from the same album, but they are actually the same.

So let me do this one more time. Here is the result of the 2nd run.
1 18
2
3 6
4 8 14
5
7 15
9 11 19 20
10
12 16
13
17
   
So now the tracks come from 11 different albums. Moreover tracks 9, 11 and 19 are the same track.

Wouldn't you agree that this is very curious and suspicious at the same time?
Cheers,
Eric.

Okay Peter.

After using the Random Play function for several times now, it occurs to me that the playlists (length=20) all contain some tracks from a same album. This should statistically not happen so often (still not impossiblethough). So I guess my question is: how really Random is the algorithm? 
Cheers, Eric

Peter,
is there a way to get 2 (or more) "genres" into a result list?
I need it for example to play a random selection from my Pop and Jazz albums.
Cheers,
Eric.

To anyone who knows the answer!

Using the Library Tab, I would like to have all my Albums displayed in the result list. So I enter the Root Gallery in the field at the bottom to get that. That works fine, however many duplicates are displayed because an album can be included in more than 1 gallery. Is there a (simple) way to avoid duplicates in the result list?
(I hope my question is clear)
Cheers,
Eric.

Thanks,
I got it working.
Over time, my Windows skills are getting better this way. Just need to spend more time on it  (instead of enjoying music)Cheers,
Eric.

Peter,
sometimes I forget to first start AutoHotkey before I play unattended.
Is there a simple way to start AutoHotkey automatically, e.g. when Windows is started?
Are there any disadvantages to do it automatically?
Cheers,
Eric.

Hello Peter,
Thanks for the explanation, I think I understand what you are saying. No problem with the way it has been setup. When you would also show the currently playing track at the bottom (like in the picture), I would be more than satisfied.
Next version, hopefully?

Cheers, Eric.

No,no, Peter, not a new problem. Just an explanation of what I do. If it was already clear, please ignore it.
Thanks, Eric.

Peter,
what I mean is that clicking only once (not double-click!) shows the coverart of the album that contains that track. The currently playing track is not affected by that action.
Eric

Hi Russ,
thanks for acknowledging.
Expanding the path to the bottom right to include the track name looks like a fine solution to me. Alternatively, using the Info-tab to contain both the path and the trackname would also work. There is already so much information on the Playlist screen! But honestly, any solution would be okay.
Cheers,
Eric