We have released a Beta update for Half-Life and associated games.
Changes in this update are:

• Fixed music tracks to correctly play across level change and to not stop (or restart) at unexpected times
  
• Clamped health values to fix display issues when it dropped below 1 or above 255
  
• Draw the "Paused" message when you pause the game
  
• Fixed custom game menus (like ones displayed by AMXModX) not rendering correctly