Esegui 
Ma quando cerco di ascoltare un video su You tube o ad esempio sul sito di Repubblica... nessun suono.
Sia che usi IE che Firefox.
Ho provato a scaricare da un sito spagnolo una versione di flash player e a ricaricare il driver della scheda audio... niente.
Non mi sembra di avere fatto cose strane ultimamente...ho caricato un paio di video su you tube dopo avere compresso i files da avi a mpeg4
Ecco il mio pc:
Operating System: Windows XP Professional (5.1, Build 2600) (2600.xpclient.010817-1148)
Language: Italian (Regional Setting: Italian)
System Manufacturer: n/a
System Model: n/a
BIOS: Award Medallion BIOS v6.0
Processor: Intel® Pentium® 4 CPU 1400MHz, ~1.4GHz
Memory: 512MB RAM
Page File: 463MB used, 786MB available
Windows Dir: C:\WINXP
DirectX Version: DirectX 9.0c (4.09.0000.0904)
DX Setup Parameters: Not found
DxDiag Version: 5.03.0001.0904 32bit Unicode
------------
DxDiag Notes
------------
DirectX Files Tab: No problems found.
Display Tab 1: No problems found.
Sound Tab 1: No problems found.
Music Tab: No problems found.
Input Tab: No problems found.
Network Tab: No problems found.
--------------------
DirectX Debug Levels
--------------------
Direct3D: 0/4 (n/a)
DirectDraw: 0/4 (retail)
DirectInput: 0/5 (n/a)
DirectMusic: 0/5 (n/a)
DirectPlay: 0/9 (retail)
DirectSound: 0/5 (retail)
DirectShow: 0/6 (retail)
---------------
Display Devices
---------------
Card name: NVIDIA GeForce2 MX 100/200
Manufacturer: NVIDIA
Chip type: GeForce2 MX 100/200
DAC type: Integrated RAMDAC
Device Key: Enum\PCI\VEN_10DE&DEV_0111&SUBSYS_00000000&REV_B2
Display Memory: 32.0 MB
Current Mode: 1024 x 768 (32 bit) (60Hz)
Monitor: Philips 107E (107E2)
Monitor Max Res: 1280,1024
Driver Name: nv4_disp.dll
Driver Version: 6.14.0010.9371 (English)
DDI Version: 9 (or higher)
Driver Attributes: Final Retail
Revision ID: 0x00B2
Video Accel: ModeMPEG2_A ModeMPEG2_B ModeMPEG2_C ModeMPEG2_D
-----------
Sound Devices
-------------
Description: C-Media Wave Device
Default Sound Playback: Yes
Default Voice Playback: Yes
Hardware ID: PCI\VEN_13F6&DEV_0111&SUBSYS_80E21043&REV_10
Manufacturer ID: 1
Product ID: 100
Type: WDM
Driver Name: cmaudio.sys
Driver Version: 5.12.0001.0643 (English)
Driver Attributes: Final Debug
WHQL Logo'd: n/a
Date and Size: 11/18/2002 15:51:40, 377358 bytes
Other Files:
Driver Provider: C-Media
HW Accel Level: Full
Cap Flags: 0x0
Min/Max Sample Rate: 0, 0
Static/Strm HW Mix Bufs: 0, 0
Static/Strm HW 3D Bufs: 0, 0
HW Memory: 0
Voice Management: No
EAX(tm) 2.0 Listen/Src: Yes, Yes
I3DL2(tm) Listen/Src: Yes, Yes
Sensaura(tm) ZoomFX(tm): Yes
Registry: OK
Sound Test Result: Not run
---------------------
Sound Capture Devices
---------------------
Description: C-Media Wave Device
Default Sound Capture: Yes
Default Voice Capture: Yes
Driver Name: cmaudio.sys
Driver Version: 5.12.0001.0643 (English)
Driver Attributes: Final Debug
Date and Size: 11/18/2002 15:51:40, 377358 bytes
Cap Flags: 0x0
Format Flags: 0x0
-----------
DirectMusic
-----------
DLS Path: C:\WINXP\SYSTEM32\drivers\GM.DLS
DLS Version: 1.00.0016.0002
Acceleration: n/a
Ports: Microsoft Synthesizer, Software (Not Kernel Mode), Output, DLS, Internal, Default Port
MPU-401, Hardware (Kernel Mode), Input, No DLS, External
MPU-401, Hardware (Kernel Mode), Output, No DLS, External
C-Media Wave Device, Software (Kernel Mode), Output, DLS, Internal
MIDI Mapper Microsoft [Emulazione], Hardware (Not Kernel Mode), Output, No DLS, Internal
Sint. SW Microsoft GS Wavetable [Emulazione], Hardware (Not Kernel Mode), Output, No DLS, Internal
MPU-401 [Emulazione], Hardware (Not Kernel Mode), Output, No DLS, External
MPU-401 [Emulazione], Hardware (Not Kernel Mode), Input, No DLS, External
Registry: OK
Test Result: Not run
ciao
