engine: client: add support for "mp3 playfile/loopfile" commands.

engine/client/cl_cmds.c

@@ -85,6 +85,12 @@ void CL_PlayCDTrack_f( void )
 		paused = false;
 		looped = false;
 	}
+	else if( !Q_stricmp( command, "playfile" ))
+	{
+		S_StartBackgroundTrack( pszTrack, NULL, 0, true );
+		paused = false;
+		looped = false;
+	}
 	else if( !Q_stricmp( command, "loop" ))
 	{
 		if( Q_isdigit( pszTrack ))
@@ -96,6 +102,12 @@ void CL_PlayCDTrack_f( void )
 		paused = false;
 		looped = true;
 	}
+	else if( !Q_stricmp( command, "loopfile" ))
+	{
+		S_StartBackgroundTrack( pszTrack, pszTrack, 0, true );
+		paused = false;
+		looped = true;
+	}
 	else if( !Q_stricmp( command, "pause" ))
 	{
 		S_StreamSetPause( true );