notes

i like the idea of the energy arc. can we make this a horizontal line in the
header of the file browser for playlists, that similarly to the header/red lines
in graph view shows the current track energy in the middle, up to 2 tracks left
and right as a line graph. scrolling with the currently running track(s). the
key transitions should be annotated on the lines (same key, adjacent etc), so
the dj knows which transition type he intended in his preplanned set. the rest
of the metadata we can store, but no need to visualize yet. what would change in
the schema? design the changes in the code, such that we have full compatability
with playlists, that dont have this data, so theres no migration needed, but for
new playlists, this data is automatically filled and shown (both in player and
cue).
also in graph view, clicking a track in the list should load it in mesh-cue, for
preview, so the user can make a decision whether the track actually fits.