Re‑added some strings that got dropped in the localization change(s).
tweaked the RTF‑to‑HTML conversion quite a bit (and hopefully fixed a few things).
Figured out the behavior of sessionexpire in the flat interface, so now the session cookie gets expired on logout/exit.
Removed a great deal of null‑handling code by removing the nulls. No functions return null, and no variables are initialized to null. Also, null comparisons were replaced wherever possible with e.g. Hashtable.ContainsKey( key ).
Added detection for Musicmatch Jukebox 9.0 and Winamp 3.