Opera browser's available, equalizer's coming can't recall where read it OTTOMH, as is FMRX/RDS, & possibly TX.
It wasn't there out-of-the-box with the N900, so what's the problem?
Besides....
Why on earth would one want to transmit audio via FMTX, when they'd have a way better experience via BT2.1/Aux-in?
Anyone with a decent head-unit in their car, or a recent model car, has that covered.