ToneQuilla 1.1.1 - Adds a new action to Thunderbird mail filters to allow playing a particular sound when the filter matches. Also includes several sample sound files - original project by R. Kent James
instead of using nsIFileURL.file.launch() for mp3 playback use a different (async) message for sound delivery. The launch is problematic as it may take over the users current music player and also may stop the main thread for the duration of the sound.