I've made small modifications to ZedThou's script, and I get bluetooth connections to the N900, but "pactl list" reports ridiculous latency between the BT Source and the module-loopback, and no audio is output. There are two configurations I've tested, and both fail with the same errors: iPad Mini -> N900, and N900 #2 -> N900.

/etc/bluetooth/audio.conf is "Enable=Source", HFP is commented out, and the [A2DP] stanza is commented out, but I've tried every combination of those. I've also tried every possible sink in the script (sink.hw0andhw1, sink.btmusic, sink.hw0) and two different rates on module-loopback (44100 and 48000) and the problem is consistent.

If anyone else has toyed with this your help is super-appreciated!