No sound after Steampipe

My TTT end round music lua won’t work after Steampipe update.

I type to play the music in ULX.

And the console said
“Failed to load sound “01.mp3”, file probably missing from disk/repository”

It works before Steampipe update,

Does 01.mp3 file exists in <your steam root older>\steamapps\common\GarrysMod\garrysmod\sound?
If it does check if mssmp3.asi file is missing from <your steam root folder>\steamapps\common\GarrysMod\bin.
You can copy it from <your steam root folder>\steamapps\common\Team Fortress 2\bin to <your steam root older>\steamapps\common\GarrysMod\bin and restarting Garry’s Mod if you have it running while entire operation was taking place.

Even with MSSMP3.asi it won’t play. You have to opt into the Dev Branch for GMod to play .mp3.

so is that mean i need to change all mp3 file to wav?


Or just wait until Garry officially releases the update to the main client?