You can download the latest VICE distributions for BeOS systems here. Some distributions may not be available at the release date.
The files are taken from http://www.zimmers.net/anonftp/pub/cbm/crossplatform/emulators/VICE.
Binaries of old releases can be found on http://www.zimmers.net/anonftp/pub/cbm/crossplatform/emulators/VICE.