Is there a wiki or help file somewhere that shows you how to use the A4 analog outputs to send out tracks from from a vst or ableton device ? Link appreciated…
Do you have an MK2 or MK1 unit? If it is a MK2 unit then this is simply not possible yet until Overbridge 2 gets released (no date announced).
For MK1 units you can use the old Overbridge version (unless you have upgraded the A4 to the latest firmware which doesn’t support the old version anymore).
The requred documentation should be included with the Overbridge software.