Mattt's idea of using the normalize function within Audacity ought to help with getting comparable volume levels on all tracks. This could be part of a mastering method used to take rendered files down to a common dynamic set of levels, perhaps with some eq and compression and/or limiting used to achieve similar timbre and levels for all tracks being converted for performance use. Have you tried the normalize function within Audacity?


DrDuBose
"Gettin' a life."

music at
http://www.bandmix.com/drdubose