I couldn’t find OpenSound mentioned at VM Ware Fusion - No sound in HaikuDepot. When tried to install VM Ware Fusion - No sound, Haiku says its not installable.
Wich Haiku have you installed? Is it a 32 or a 64 bit version?
I installed 64 bit.
No opensound for 64 bit yet. Try 32 bit Haiku.