Music does not pick a random track on load/start

[dalerank]

Summary

On load/start, music always picks the same track for a given population; Vanilla stops current track and plays a different random one.

Reported

Music track stops in vanilla when you load a save or start a game, and plays a different random track (Akhenaten always plays the same track?).

Code notes

• music_update() in src/sound/music.cpp selects by enemy count / population thresholds from music.js — no randomization.
• Pop < 1000 → always city_1.
• Save load (non-briefing) calls g_sound.music_update(true) (�oilerplate.cpp).

Expected

On mission start / save load, stop current music and pick a different random city track (Vanilla behavior).

Labels

bug, gameplay