mac once said that the player shouldn't leave gaps between tracks, so I guess even AudioCatalyst is putting some silence at the end of tracks.

*looks around shiftily* Did I? Oh, I did.

Well, I've now realised that there could be small gaps between tracks by virtue of the way mp3 works. There are no gaps in the actual output due to switching tracks but the decoder may output some silence during the switch.

--
Mike Crowe
I may not be speaking on behalf of empeg above :-)