@Gilles: Thanks for your suggested solution. As I'm not a Unik/Linux freak I had difficulties to get your point, so it motivated to look further!

And guess what: I think I found a reasonable solution:

MacOS has an integrated Midi Loopback feature (IAC driver in the Audio midi setup).
That bus I could use in PT5 as well as in a simple midi Player (like Qmidi from Mixagee http://www.mixagesoftware.com), which both supports a midi library as well as playlists.

Maybe anyone else founds this useful.

That looks like a simple solution. On my old Windows system, I used the free VanBasco midi player that does a similar thing ( http://www.vanbasco.com/ ) .

I used it (still do in fact) to play a midi file with a GigaStudio sampled instrument. My point in giving that short shell script is that people may not know how to access Pianoteq through a command line on the Mac, thinking this is reserved to Linux. Also, I recently completed a command line driven algorithmic composition program in C, so my mind is currently set to this kind of basic Unix computation on the Mac.

And guess what: I think I found a reasonable solution:

MacOS has an integrated Midi Loopback feature (IAC driver in the Audio midi setup).
That bus I could use in PT5 as well as in a simple midi Player (like Qmidi from Mixagee http://www.mixagesoftware.com), which both supports a midi library as well as playlists.

Maybe anyone else finds  this useful.

EDIT, here's a link on compiling Audacious on Mac OS-X:

https://lifeforms.nl/20140302/building-...mavericks/

Say you have unzipped the collection in a directory named "e-piano-competition-2002-2009" as I did.
In the parent directory, create a shell file, named for instance PlayList.sh with the following content (assuming Pianoteq was installed in the default directory):

#!/bin/sh
ls e-piano-competition-2002-2009/*$1*smf* > list
while read file
do
echo $file
cp "$file" file.mid
/Applications/Pianoteq\ 5/Pianoteq\ 5.app/Contents/MacOS/Pianoteq\ 5 --preset "D4 Daily Practice" --midi file.mid --headless --play-and-quit
done <list
rm list file.mid

Don't forget to make it excutable by chmod +x ./PlayList.sh

Then, for instance, the command ./PlayList.sh Bach will play all the Bach files in the collection.

Of course you can change the preset in the file and if you prefer, take away the --headless parameter if you want the GUI visible. Other parameters are displayed with the --help option.

That is one way to create a temporary playlist to render with Pianoteq. The parameter can be any substring of the file names, for instance the name of a performer.

No parameter means all the files so beware. (You can always stop the process with ctrl-z)

(I pass a copy of the file to Pianoteq because the blanks in the names cause a lot of problems when passed directly inside a script as a parameter...)

Hope this helps!

I'm in the process of downloading the midi files from the Piano-e-competition, because I really like them.
I think they are really nice to hear and also very useful to test the various PT options and settings.
Does anyone know if it is allowed to redistribute the midi-files once downloaded?

Thanks for help