You can access the xine project source repositories anonymously if you want to look at or use the latest version of the source code or you want to compare with older versions (most releases are tagged) or you want to find which change caused or fixed a bug.
Please note that the sources present in the repositories are very much work-in-progress and, as such, may not be stable. (It's quite likely that they will be stable, though. It's just not guaranteed.)
- SourceForge.net xine project hg is a mirror of the primary repositories. It does not include distribution-specific or experimental repositories.
- Alioth was shut down 11.5.2018. All old repositories were archived: http://alioth-archive.debian.org/hg/