Sibelius 7 and later will export musicxml; so if you can find a computer with Sib 7, it can open your file, and then you can export it. Heck, if you send it to me I’d be happy to export xml for you.
Sibelius 7 and later will export musicxml; so if you can find a computer with Sib 7, it can open your file, and then you can export it. Heck, if you send it to me I’d be happy to export xml for you.