[Reinhold H.]

I would like to add my 2 cents here, too.

Using the MIDI protocol between PhotoScore and Composer is a kind of old fashion. MIDI is a machine language protocol which when created from paper sheet/PDF only contains Note Ons/Offs. All other notation elements are lost with the MIDI export by PhotoScore. This is the nature of the MIDI protocol.

I recommend to use the MusicXML protocol between PhotoScore and Composer. For bad quality paper sheet/PDF, I have seen some "scrambled" MusicXML file but - theoretically - the music elements like repeat bars, ending brackets etc. should properly be transmitted into Composer. Composer's MusicXML imports the repeat barlines, endings etc. and translated and creates repeat instruction. The repeat instructions need to be reviewed but - theoretically - should give a decent starting point.
If that process won't work we can evaluate the issues where we need to original PDF, the exported MusicXML file from PhotoScore.

Of course, performing repeat instructions in mp3 format by Audacity is not what we recommend. Adding Audacity creates another tool dependence and a future handling of the music file is almost unmaintainable.

Reinhold