>Does this mean turning off trustcabal will let you sing
>offensive songs to cabalmates, or is there some other syntax?

Yep. Trustall has to be off too, actually. This was a little buggy but we got it straightened out yesterday.

Note that defensive/beneficial songs still always affect cabalmates no matter what.

>Also, will this have an effect on area spells from mages?

Currently, no. Songs have a little bit of a different infrastructure. It made sense to rework it a bit in order to code, for example, the Troubador edge, and that's produced dividends like this little bit of joy. Maybe when we get to invoker or anti-paladin edges it will make sense to do the same for area spells.