Support for 3G 3.1.1

Hi there

I've been fine with audioboo on my iPhone 3G running 3.1.1 - up until this evening that is.

When I synced my phone with iTunes, the audioboo app mysteriously got wiped. The current app in the iTunes store obviously requires IOS 4.

My iMac itself is also rather old, running Tiger 10.4.11. It just works for me, or at least it has until this evening :(

Any idea how I can get the app back on my phone?

Thanks