You can also try these related scripts:

• mb. AUTO-FOCUS + KEYBOARD-SELECT - musicbrainz.org: MOUSE-LESS EDITING! Cleverly focus and refocus fields in various MusicBrainz edit pages and tracklist Up Down key navigation
• HTTP-to-HTTPS redirector - Replace http:// with https:// in the address bar, to make sure you're using the SSL-encrypted version of a page. Only enable for pages that you know are SSL enabled.
• MusicBrainz: Fix featured artists - Tries to detect artist names in artist and track fields and allows you to extract those. Found entries are added to the corresponding editor for fast adding.
• MusicBrainz: Sort artists - Allows you to change the order of artist names in any of the multiple artists editors. NOTICE: This will remove any artist lookup data already present in the editor. You have to assign this manually again.
• Stig's Art Grabr - Grabbing big high resolution album cover-art from various sites