64-bit Users:
Note that, at this time, the entries above are for i386 users only. Attempting to use these repositories with a different architecture (eg amd64), will result in 404 errors as APT will be looking for files not in the repository.
While there is currently no Wine package explicitly designed for the 64-bit version of Ubuntu, there is an easy hack that can be used to install the 32-bit package into the 64-bit distribution and have it function normally. See this page on the Wine wiki for more details.
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