I'm using foobar2000 9.5 beta 6 and implemented the album list panel... (not foo_uie_albumlist_panel.dll)...
It works fine so far... using a browser-like view (as you can see here:)
CODE
$replace($replace($replace(%path%,%filename_ext%,),'D:\Music\',),\,|)
Ok, thing is... my double-click action is "expand/collapse" and middle-click action is "send to current playlist"...
Before the new 9.5 beta stuff... I was using ColumnsUI with foo_uie_albumlist_panel.dll ... there was a very comfortable way adding the selected items to the playlist... you clicked on something... and WHOOOOHOO... there is an autogenerated playlist called "library view" where all the containing items were automatically added... without pressing the middle button...
It would be a nice feature to the "normal" AlbumList.
Another thing is... by adding stuff to a playlist... it is unordered...
THX for answers...!