Bluetooth is only partially working at this time, and to be honest I'm not sure when it will be fixed. It's a common problem with 2.3 on the OV, especially with the CM7 framework, it's quite the bugger.
I believe Blarfie added the ext3 support today, so now we have ext2/3/4, hopefully DT's a2sd will work with the next build. I'm compiling it now, but I won't have time to test, I really need some sleep
The FM radio app is a WIP, we aren't sure if the radio in the OV can be reconfigured programatically, you can uninstall it if you like.