Sega Rally 2 HD Audio Fix Files

If you delete that key then the regular audio comes back! Looking at the key, if you open the top level folder (it may contain some other files inside) and double-click the (default) key, it'll say something like this as the value data:

Sega Rally 2 HD Audio fix files

2.\\?\hdaudio#func_01&ven_1102&dev_0011&subsys_11020023&rev_1009#**long hex key**\lineoutextopo/00010001\Device\HarddiskVolume2\Games\srally2\SEGA RALLY 2.exe%b00000000-0000-0000-0000-000000000000