Would the sync export data from Go-Play Along do the trick then? I know it isn't "free" but is potentially a nice and "easy" option. The exports from there have an xml for sync, the gp file and audio file in one export folder. Happy to share a few if you'd like them for testing. As for the 5/7 string addition - NICE. If I can make a suggestion from a users point of view, could it be possible to have an option for the "extra" string be added above the low E, rather than changing the color of the high e? I often use the ER mode we hacked into Rocksmith, we change the color of the low E, as (for me at least) it is easier to transition between 4 and 5, or 6 and 7 strings, if the EADGBe are always the same colors - the only change being the low B etc being added when necessary. I know if using something akin to the RS file format, that isn't super simple, given the way they name strings - But, felt it worth asking about. Loving the way this is looking!