Ok, I've looked into this again and still can't reproduce on a clean Windows XP system.
Build 100 added the Enqueue item for me, but it obviously only added it after I went into the Configure Xion, File Types Tab, selected .mp3 from the list and then clicked Associate (or double clicked .mp3)
Perhaps try Disassociating and then Reassociating? Does that fix it? Perhaps another application stole the mp3 extension?
For those that have the problem, and know how to use RegEdit:
Please use regedit to view the contents of HKEY_CLASSES_ROOT\.mp3 and let me know what the default value is.
Also check out HKEY_CLASSES_ROOT\Xion.AudioFile\Shell and see if the Enqueue Folder exists. Browse down to Command within that folder and check to make sure the Path to Xion is correct.
Thanks!
Cliff
