mfstaff
Hello
shortly: NO to all two questions.
In detail:
>PDF are static files, Livetraler work with "live" things
lyrics and chords can be inserted into the LYrics track and you're good to go
>Livetraker is for Live, not for practice
your requested features are present in several software out there, Livetraker was born for specific needs: manage Live stage (no practice) with NO manual intervention (no manual scrolling) ;-)
