A lot of things have changed in iTunes 7, and Multi-Plugin needs many changes.
The current version is quite buggy, only use it if you really can’t wait for a stable release.

More info: Preview - Multi-Plugin for iTunes 7.

A couple of notes:
1. ) No installer. The installation procedure is quite different now, I’ll modify the installer later.
2. ) Foobar2000 passthrough doesn’t work well.
3. ) The menu button sometimes doesn’t work.
4. ) Dumping resources works just like before. Thanks god I made this part so well.
6. ) The equalizer window has black squares on it’s sides.
7. ) All previous skins don’t work, but they could be updated, the skinning engine is working great.
8. ) Skinners - You can base your iTunes 7.0.0 skins on this Multi-Plugin version. The skin format won’t change in the final version.