sound problem with Shivajiva101's mangos pack

hey

i got Shivajiva101's pack today and followed all the instructions and managed to get in and stuff but there was no music or sound effects how do i fix it?

at first i thought it was my comp being stupid so i used repair and took Wow back to 1.8.0 and tried mara's repack again and sound worked

so took it back up to 1.12.1 started Shivajiva101's up again logged in and had no sound again :(

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edit: fixed it ^^ was my comp being stupid just did a reboot and tried again and it worked