Argh. My old ION-based system was throwing up on some Blu Ray mkvs I had, so I figured it was time to upgrade. Got a barebones AD04, added 4GB of memory and installed beta 2 on a USB stick.
I got sound working (and the problematic mkvs look good), BUT:
1) The remote that came with the Zotac doesn't work. Press a key and I get infinite repeats of that key until I unplug the IR receiver.
2) widescreen (16x9) movies don't look right. All have large black bars at the top and bottom, so the only way something can be "Full Screen" is if I set View Mode to Stretch 16:9, which makes the resulting movie look vertically stretched. If the TV is in 1080 and I have a 1080 movie, setting zoom to original size makes the movie look like it's about 1/2 the size of the screen. Putting OE into 720 looks the same, so there's certainly something up with the Fusion driver.
For cross checking I tried to install OE 1, but got a "AMD unsupported" overlay in the bottom right hand of the screen and the system shut down about 5 minutes in.