My Main Output is a 5.1 Output. When setting my Audition Path to that, it seems to 'downmix' to a mono output on Channel 3 (Centre) when previewing in any AudioSuite Plug Ins.
Workspace Auditioning is fine though & plays out of L&R. Surely that's the same Audition Path?
Ive tried trashing Prefs & still the same