How do I get the sound back after winning a game of Solitare?
1. Do you get sound while playing the game?
2. Did you make any changes on your computer prior to this issue?
3. Do you get the default Windows sound on your computer?
You may remove the Solitaire game & add it back. Thereafter, check if the issue persists:
How To Add or Remove Games in Windows XP?
Hope the information helps.