Tiger, Leopard, Snow Leopard? You got it!
After the 2.0.13 glitch, I release beaTunes 2.0.14 yesterday. It addresses the incompatibility issue with OS X 10.4 (aka Tiger) introduced in 2.0.13. It also addresses another issue faced on Snow Leopard (OS X 10.6) - non-44.1kHz files potentially lead to application crashes. Hopefully that means that all critical issues are fixed as of now and we can all look forward to the release of Snow Leopard on 8/28/2009.