v1.0.4 breaks audio playback — players cannot hear any sounds

[john2585]

After upgrading from v1.0.3 to v1.0.4, all audio stopped working for clients. The server logs show sounds being decoded and played correctly (no errors), but players hear nothing. Rolling back to v1.0.3 with UseFFMpeg: true resolved the issue.

Additional notes:

UseFFMpeg: false (Native decoder) also produces silent audio on v1.0.3 — FFMpeg decoder is required for sounds to actually reach clients
ffmpeg.exe must be placed in the CS2 working directory (game/bin/win64/) for FFMpegCore to find it — it does not look in the plugin folder

[skuzzis]

Hi there, can you provide the sounds used?

[john2585]

The sounds are MP3 files used via the EntrySounds plugin.

To add to our original report — we also found a second issue that causes audio to stop working after every map change (changelevel). The OnTick event used by AudioMainloop.SendingLoop gets unregistered after a changelevel, so the audio sending loop stops running on the new map even though the plugin is still loaded.

We fixed it locally by adding this to Audio.cs Load():

Core.Event.OnMapLoad += (map) => {
mainloop.IsRunning = true;
// Re-register OnTick in case changelevel unhooked it
Core.Event.OnTick -= mainloop.SendingLoop;
Core.Event.OnTick += mainloop.SendingLoop;
};
So to summarise the two issues we've hit:

v1.0.4 silent audio — original report, rolling back to v1.0.3 with UseFFMpeg: true fixes it
Audio stops after changelevel — OnTick gets dropped on map change, fixed by re-registering it in OnMapLoad