Minecraft alpha without sound

Minecraft sound error inf-20100618, a1.0.4, a1.0.5_01, a1.0.11, a1.0.14, a1.0.15, a1.0.16, a1.0.17_02, a1.0.17_04, a1.1.0, a1. 1.2.

And for that not to happen it is necessary to start the minecraft launcher with the Pc offiline.

Please add a way for the launcher to run these versions in offline mode or fix this bug.