juerg wrote:The secret is to embed the fonts in the PDF file. I never used Guitar Pro but I just found a webpage that claims that Guitar Pro has a check box labeled "Do Not Embed Fonts" (probably in the PDF export dialog box). Make sure that this box is not checked.
To answer your other question, I am using Lilypond http://lilypond.org and love it. It produces perfect PDF files (very high quality, small size). So far I encountered no problems reading them on other computers.