I'm not sure if it's the problem, but sometimes if the music has text in the tracks description makes MUS2MID crash without an error, try removing all the text from the music entry and converting again, also, you can use XWE to insert the music directly inside the WAD file, Vavoom and other ports support MID files, so no conversion might be needed at all <!-- s:) --><img src="{SMILIES_PATH}/icon_smile.gif" alt=":)" title="Smile" /><!-- s:) -->.