What is an emulecollection?
An emulecollection is a file which contains various (hence a collection of) ed2k links. This is usually used to group various related files, e.g. a series or a music album.
aMule and emulecollections
Since aMule 2.2.0, aMule opens emulecollection with the ed2k utility. The syntax is:
ed2k -e file.emulecollection
In aMule shared files view, you can also right click on an emulecollection file and select Add files in collection to transfer list to open it.