Hello Michel,

RealBand uses codecs installed in the Windows Audio Compression Manager. Your computer, for whatever reason, must not have the required codec installed there. We can't include mp3 codecs with the program due to mp3 licensing and copyright issues related to encoding mp3's. Anyways, there are various solutions to the problem as others have mentioned. This topic should also be of some help (it is applicable to RealBand as well as PowerTracks) http://www.pgmusic.com/tutorial_ptwrender.htm


Andrew
PG Music Inc.