I can recommend buying a 06 Gallardo instead, the 06 stock exhaust sounds very nice

But if that's not an option, Tubi is always a nice way to go. Tubi for the Gallardo is available in Available in both normal and rumore (LOUD) versions.

Scudeira Systems in Surrey can help you with that, they have som videoclips of a Tubi Gallardo too:
Scuderia Systems