Question : Complicated Routing Question

I have a client that needs some automated routing failover.  

The currently have two sites.  Each site has two broadband connections running into a Cisco ASA 5505 running V8.0.  The ASA firewalls are currently configured for ISP failover.  There is a VPN link between the sites.  Each site has a Voice VLAN and a Data VLAN which both go over the VPN.

They would like to add a point to point T1 to fix thier voice quality problems; probably accomplished by adding a set of new routers.  The T1 would become the primary site to site link for both VLANs.  They'd like to further take advantage of the connection for more redundancy.  They would like the configuration to automatically reroute based on the following scenerios:

1.  Site A has multiple ISP failures then have all outbound traffic should route through the T1 connection and out the other sides ISP links.  The opposite would be true if it were Site B losing both connections.

2.  If the T1 fails automatically send Voice and Data VLAN traffic across the VPN via the ASA firewalls.

I understand that OSPF can be used over IPSEC VPN's now on ASA firewalls.  Could OSPF be deployed to handle these scenerios?

2.  

Answer : Complicated Routing Question

Not so complicated.

Floating static routes or object tracking.

Add two static routes, one with higher metric on the second route than the primary.