VLAN Mirroring

Hi,

I have a stack of six 5548P switches with 2 VLANs (Voice and Data). We recently bought a call recording application that requires to mirror the voice traffic we want to record. Is it possible to have the voice VLAN as interface source for port mirroring?

I need to mirror the voice traffic from 60 devices, that would be 60 physical ports and I know there's a restriction of max 8 source ports per unit.

Any idea on how can I accomplish this?

Thanks