winamp or musicmatch stopped working

I reinstalled WindowsXP Home Edition yesterday. As a result I cannot use either MusicMatch or Winamp to listen mp3:s.
Both mediaplayers have functioned perfecly until now.
Warnings like this pop up:
*Direct Sound output v 2.46 (d) error.
Bad sound driver. Please install proper drivers or select another device in configuration.*
*MMJB Soundcard problem: WaveOut Format not supported.*

Where can I get proper drivers ?

Best regards
Eero Lehtonen, Helsinki, Fi
aitalampi@luukku.com