Its been all go at ToLiss this week, first with the release of v1.1 of their A319, and now with a new sound pack to accompany it.
The new sound pack is made by Turbine Sound Studios and simulates the IAE 2524 type engine. The product costs $9.95USD and is available from the X-Plane.org store.
V1.1 of the A319 also includes new CFM engine sounds, provided also by Turbine Sound Studios. You can check out the update post here.