regarding the first issue, the .jar shouldn't have been put in with your b4a core. it should have gone in the add'l libraries folder. as to where you can find it, apparently
here
once you have it (in your add'l libraries folder), you can simply refer to it in your app with:
#AdditionalJar: androideasingfunctions-1.0.0 ' you don't need the .jar ext
(or maybe it's already there. did you look? if it's there, then use the #AdditionalJar line above)
as to #2, someone else will have to step forward.