I I just installed the modified FM transmitter deamon from:
http://jacekowski.org/Maemo/FMTXD

With the modified file the FM transmitter keeps running when headphones or USB cable is plugged in. I would like to be able to use the TV-out mode together with the FM transmitter, but as soon as I enable the FM transmitter the video output stops over the TV-out cable.

I suspect that a TV out daemon on the N900 needs to be modified in a similar way as the FMTXD deamon to ignore certain events (as in the enabling of the FM transmitter).

Any ideas on where to start? Surely this can be done.