I don’t know if you need to change your cache location, but heres how with a message (go to the help file, and click on ‘open spigot~ reference’ and you’ll see it right there). Are you sure everything stayed the same and you didn’t just have an audio problem in general? If you moved your patch, edited or renamed your video or opened another patch with the same spigot name (maybe you have two versions of the same patch?), then spigot would have to cache again if set with default cache location.

spigot_cache
0 = next to the original movie
1 = in the user-domain common folder (default)
2 = in the system-domain common folder
3 = in the user’s temporary items folder
(symbol) = in the folder specified by the symbol
On Macintosh, the user-domain common folder is "~/Library/Application Support/Cycling ’74/spigot-cache/". On Windows, this folder is "C:Documents and Settings(username)Local SettingsApplication DataCycling ’74spigot-cache"

On Macintosh and Windows, the system-domain common folder is "(Cycling ’74 support folder)/spigot-cache/".

The temporary items folder is typically invisible and inaccessible to normal users on both systems.