database, calls, etc.

Dear manager/s and others,

HELP!
I have been plagued lately by oddly calling birds. Most I can identify by sight and the eccentric nuances of others are familiar to me. The problem is the great variety of calls within a species. For instance, for several days I suspected that I hear bee-eaters calling, but it wasn't quite right: it turned out to be single young crimson rosellas calling in the canopy. Likewise the dratted SBBs are getting to me, with many thornbills utilising a much vaster array of calls at the moment than I am used to.
I'm sure it would assist many bird watchers if there was a database of calls. I know there are several on-line, including the Birds In Backyards pages themselves, but most include only one call type. Sometimes the calls given are what I would consider to be very atypical and of little real use to the beginner without explanation.
It would be great to have a database of bird identification (in the case of this forum, URLs of the most useful sites)that included links to photos and to a variety of call types. What do ya reckon?