I did convert ca 6000 pdf files created with BIAB (Band in a Box) into musicXML using PDFtoMusic Pro (1.5.0) via the batch option. The musicXML files are batch processed by a "find and replace" .bat file in order to get content that directly can be used in "Avid Scorch" at the iPad. Then the musicXML has been compressed again into .MXL.
Additionally another 6000 files from Wikifonia were processed which adds up to ca 12000 songs available in the formats: PDF (for e.g. forScore), .MSCZ (for MuseScore and MuseScore Songbook) end .MXL (for "Avid Scorch"). You can access all files and formats (.mgu, .pdf [from BIAB], .mxl, .mscz, pdf [from MuseScore]) via links that are mentioned in: https://www.sugarsync.com/pf/D7389688_4167795_9830380