Terraria vs Mumble Conflict

There is currently a problem starting Terraria when you also have Mumble running.

Apparently that a lot of people have problems starting the game, but no one seems to be sure of the issue. Some say it's because of the .NET or XNA framework and others say it could be a conflict with creative sound cards.

Of course, you should check if you have the latest .NET and XNA framework installed. Be sure to have the latest Creative drivers for your card (mine installed automagically with Windows Update optional updates). You could try verifying Terraria game cache integrity under Steam.

I was getting a "Terraria stopped working" window with the follwing details:
Problem signature:
  Problem Event Name:    APPCRASH
  Application Name:    Terraria.exe
  Application Version:    1.0.4.0
  Application Timestamp:    4eea0a07
  Fault Module Name:    RTSSHooks.dll
  Fault Module Version:    0.0.0.0
  Fault Module Timestamp:    4d4fb7eb
  Exception Code:    c0000005
  Exception Offset:    0000a5f2
  OS Version:    6.1.7601.2.1.0.256.48
  Locale ID:    3084
  Additional Information 1:    0a9e
  Additional Information 2:    0a9e372d3b4ad19135b953a78882e789
  Additional Information 3:    0a9e
  Additional Information 4:    0a9e372d3b4ad19135b953a78882e789

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A workaround is to stop Mumble, start Terraria, then restart Mumble. This conflict could very well happen with something else than Mumble. I have a Creative sound card (good old Audigy 1), but I don't know how to fix this issue so I am unsure if it's related.

What kind of sound card do you have? Did you have the same issue using another sound-related software?

EDIT: Not just Terraria! Grand Theft Auto 4 also crashes on start if Mumble is open.