Acaba de salir otra versión de TMPGENC DA
Es la 1.5.20.62 y su enlace es:
http://www.pegasys-inc.com/en/download/tda.html
 Acabo de probarla y no se muy bien en que se diferencia de las anteriores.
Saludos a todos
Priamo

TMPGEnc Plus DVD Author 1.5.20.62 - February 5 2004
 
Improved
(1) Px engine (DVD writing tool) has been renewed. Thanks to this, problem related to process such as "Fast User Switching" in Windows XP should be also resolved.
[2] In environmental settings, you can choose to "re-encode LPCM or MP2 audio to Dolby Digital (AC-3) audio as default." This setting can be chosen for both NTSC and PAL.  
 

 
 
TMPGEnc Plus DVD Author 1.5.19.59 - January 16 2004
 
Added
[1] It supports the AC-3 plug-in. You can encode/decode AC-3 sound if you have the plug-in. When the AC-3 plug-is recognized, the AC-3 logo appears in the version information:
click [Options]-[About TMPGEnc DVD Author] .  
Improved [1] The sampling rate converter has been renewed.
[2] The thumbnails display is more precise, in [Edit clip] window.
[3] The "audio desync" correction is more accurate, when adding a new clip or when authoring.
[4] The length estimation of MPEG system stream is more accurate.
[5] The DVD writing tool has been renewed.  
 
extraido de http://www.pegasys-inc.com/en/download/tda_rireki.html