Hi James,
Thanks for your prompt reply. I had got bamboozled by doing so much terminal gibberish. I’ve now got Audiveris working (which does the music characters) but there’s still trouble with Tesseract OCR (which does the text characters). I installed it with UbuntuMate Software but it wouldn’t open pdf files and I couldn’t find any help on that, also UbuntuMate Software installed Java 11 with Tesseract so Audiveris wouldn’t work either. Only an hour wasted undoing all that. Installing Tesseract with sudo apt-get install will install Tesseract v4 but Audiveris needs Tesseract 3 so I need to install it myself. I’ve downloaded Tesseract 3.0.5.tar.gz and opened it but I’ll need lots more terminal gibberish to get it working. Any chance you could help, please?