How to disambiguate tracks?

[arsaboo]

I am currently using the following path:

paths:
    default: /data/music/$folder/$initial_char/$album%aunique{album year,,[]} ($year)/$album ($year) - $title
    singleton: /data/music/$folder/$initial_char/$album%aunique{album year,,[]} ($year)/$album ($year) - $title
    comp: /data/music/$folder/$initial_char/$album%aunique{album year,,[]} ($year)/$album ($year) - $title
    albumtype_soundtrack: /data/music/$folder/$initial_char/$album%aunique{album year,,[]} ($year)/$album ($year) - $title

item_fields:
   initial_char: |
       char = album[0].capitalize()
       if album[0].isnumeric():
           char = '#'
       return char

aunique works well for album disambiguation, but often there are albums with tracks with identical titles. See this album for example. Note that tracks 7 and 11 have the same title:

Right now, beets randomly adds a number Bewafa Sanam Vol-1 (1993) - Dard To Rukne Ka Ab Naam Nahin Leta.1.mp3, which changes every time we use beet move. Is there a way to disambiguate tracks?