No metadata for the listenerer when sourcing with Mixxx on Windows

2.4.99.1 aka 2.5 beta1 on windows with Mixxx as source client. Unfortunately the metadata (title and artist) is not visible on iTunes anymore.

In 2.4.1 this was no problem. I tried to use the charset UTF-8 in Mixxx and in Icecast but it didn't work either.

Maybe someone could have a look at it.