In control panel Add/Remove programs I removed Smartsound Quicktracks Plugin (7.10mb) because I didn't know what it was.  I received warning that other programs may not be able to use this function so I aborted the removal.  However, it removed it anyhow.  Now I have no sound on any video files. Reinstalled Nero hoping that would fix it.  It didn't. Rec'd message Found New Hardware but can't locate software.  Went through all CDs that came with system; no luck. Any idea what I might do now?  Using XP Pro on Dimension 2400.

 

Thanks (I hope)