Drag & drop your Sib trumpet MusicXML file to get a commented music sheet with valve fingerings!
Install the .dmg file and drag & drop your sheet file in the box.
Ensure that you have it in MusicXML format: .mxl. If your file is another format like .mscz, .mscx or else, open it with MuseScore and export it to .mxl format. Otherwise there are online converters that would do it for you easily.