addition to above: '''this problem is clearly directly linked to my xp-repair from cd. '''Everything was OK before with no problems.(I have just a few plugs anyway) A thought: overinstall FF once more? Any tips on this very appreciated... regards mike

''' PROBLEM SOLVED!!''' I updated windows and it came back! (don´t know really which update - maybe MS audio or Media or directx - or something else....) here is 2 links I found that can be useful for this kind of problem when all updates are installed and it wont function. This is about the so called FixNoFlashSound.reg http://www.mydigitallife.info/2007/08/15/youtube-dailymotion-google-video-flash-games-and-applications-no-sound-and-audio-in-windows/ ... This is a quite extensive step-by-step list for to troubleshoot this kind of problem. Very useful!! (so useful that I copy it in here below) http://www.techsupportforum.com/microsoft-support/windows-xp-support/300935-solved-no-sound.html ... '''step-by-step list for to troubleshoot soundproblems:''' Re: No sound Note: Start with #6 and then #7 This is a copy of the list of things I suggested to another person I was helping who had the same problem: 1. Uninstall and reinstall the sound drivers 2. Install K-lite codec pack http://fileforum.betanews.com/detail...d/1094057842/2 3. Start > Programs > K-Lite Codec Pack > Configuration > Codec Tweak Tool and check the box next to [Registry] Fix non-working system sound 4. Make sure the volumes are not set to zero and that nothing is on mute Control Panel > Sounds and Audio Devices > under Device Volume, click on Advanced 5. Make sure that everything in Device Manager is fine (no yellow or red marks) Control Panel > System > Hardware tab > Device Manager 6. fixnoflashsound.reg (just click on the link and install it) http://files.filefront.com/fixnoflas.../fileinfo.html 7. netvol.reg (just click on the link and install it) http://www.kellys-korner-xp.com/regs_edits/netvol.reg 8. If possible, make sure Digital Output Only is not check marked (not all cards support Digital Output Only) http://tomebling.home.comcast.net/~t...oundConfig.jpg Made sure speakers are properly connected to sound card Run SFC /Scannow Start Menu > Run > type this in exactly (note the space between C and /): SFC /Scannow Tried different Video player Installed Quicktime Alternative Reinstalled DirectX Confirmed presence of "plug and play software device Enumerator" Made sure that default devices were selected Control Panel > Sounds and Audio Devices > Audio tab Confirmed the presence of msacm32.drv and msacm32.dll Search for these files in C:\Windows\System32 Tried using different settings in the sound card’s configuration window Installed Microsoft ADPCM Audio Codec and IMA ADPCM Audio Codec for %x in (C:\WINDOWS\System32\*.dll) do regsvr32 /s %x Try System Restore ''''''''''''''''''''''''__ tosh9i hope someone benefit from this. suppose it´s a common problem. regards mike