XP Mumble Output not working. Mumble overlay only half working.

[Tymo]

In the middle of a round today I suddenly was unable to hear neither my squad mates nor anyone else around me over local. What was strange is they could apparently still hear me when they responded over the in-game text chat.

To reiterate the issue:

• I cannot hear other players.
• Other players can still hear me over Mumble however.
• The overlay works only for my inputs, and to show if Mumble is disconnected. The overlay in the lower left that shows when other players are talking does not show up.
• Mumble is not muted.
• My speakers and headphones work fine. The issue is only with Mumble.

Fixes that I have attempted and failed:

• Restarted Mumble.
• Restarted PR.
• Restarted my computer.
• Reinstalled PR.
• Switched my audio outputs.
• Joined a different server.
• Turned off Windows Firewall.
• Ran through the Mumble Audio Wizard. I could not hear any of the audio samples that were supposedly playing during two of the steps.
  

Here are my specs:

System Information
------------------
  Operating System: Microsoft Windows XP Home Edition (5.1.2600)
   Current Culture: English (United Kingdom)
       Motherboard: Gigabyte Technology Co., Ltd. 8I945GZME-RH
         Processor:               Intel(R) Pentium(R) D CPU 3.40GHz (Physical: 2, Logical: 2)
            Memory: 2.00 GB
      DIMM Modules: A0: 1024.00 MB @ 66 MHz
                    A2: 1024.00 MB @ 66 MHz
         Page File: -1341763584.00 B
    .NET Framework: Unknown

Display Information
-------------------
 Display Device(s): Plug and Play Monitor on NVIDIA GeForce 9800 GTX+
   Display Mode(s): 1920 x 1080 (32 bit) @ 60 Hz
    Driver Version: 6.14.11.7813 (178.13)
    Display Memory: 512.00 MB
     Multisampling: 2, 4, 8
               DPI: 96 (100%)

Audio Information
-----------------
  Primary Playback: Realtek HD Audio output
 Primary Recording: Realtek HD Digital input
  Open AL Renderer: Software
               EAX: True
           EAX 1.0: False
           EAX 2.0: True
           EAX 3.0: False
           EAX 4.0: False
           EAX 5.0: False
             X-RAM: False

Disk Information
----------------
      Install Path: C:\Program Files\Project Reality\Project Reality BF2
                    Free: 62.24 GB, Total: 279.47 GB, FS: NTFS, SSD: False
          Mod Path: C:\Program Files\Project Reality\Project Reality BF2\mods\pr
                    Free: 62.24 GB, Total: 279.47 GB, FS: NTFS, SSD: False
     Profiles Path: C:\Documents and Settings\[redacted]\My Documents\ProjectReality\Profiles
                    Free: 62.24 GB, Total: 279.47 GB, FS: NTFS, SSD: False
    Update DL Path: C:\Documents and Settings\[redacted]\Local Settings\Application Data\Project Reality\Project Reality BF2\Downloads
                    Free: 62.24 GB, Total: 279.47 GB, FS: NTFS, SSD: False
   Update Log Path: C:\Documents and Settings\[redacted]\Local Settings\Application Data\Project Reality\Project Reality BF2\UpdateLogs
                    Free: 62.24 GB, Total: 279.47 GB, FS: NTFS, SSD: False

Game Information
----------------
    Installed Mods: pr
       Current Mod: pr
           Version: 1.3.1.0
        PR Version: 1.3.1.0
          Language: english
   Debug Available: False
     Large Address: False
Supported Hardware: None

Profile Information
-------------------
      Profile 0001: Tymo
              Type: Online
 Last Used Profile: True
        View Intro: True
        Fullscreen: True
      Display Mode: 1920x1080@60Hz
Display Mode Valid: True
   Graphics Scheme: Medium
     Multisampling: Off
             VSync: False
   Terrain Quality: Low
   Effects Quality: Medium
  Geometry Quality: Low
   Texture Quality: Medium
  Lighting Quality: Low
   Dynamic Shadows: Medium
    Dynamic Lights: Medium
 Texture Filtering: Medium
    Audio Provider: Software
    Provider Valid: True
     Audio Quality: Medium
               EAX: True

[LITOralis.nMd]

Install the Standard Mumble and see if it works.

Has to be a problem with a file in C:\Users\[USERNAME]\AppData\Roaming\Mumble but I'm not sure exactly what the problem is.