New ESU LokSound Prime Mover files include the following Prime Movers for all LokSound Decoders:

Baldwin 6 cylinder 606SC with Dual Prime Movers
Locomotives:
DT-6-6-2000 - CenterCab Transfer Units
DR-6-4-2000 - Six axle Sharks
PRR -Classified as BP-20s

Baldwin 606NA with Dual Prime Movers
Locomotives:
RT624 Centercab - purchased by PRR and the MN&S

Dual ALCO 6cyl 539T DL-109
This file is for locomotives that use two 539T Prime Movers such as the locomotives below:
DL-103b
DL-105
DL-107
DL-108
DL-109
DL-110

EMD 16 cylinder 645E3 with Dual Prime Movers
Locomotives:
DD40AX

GE FDL 16cyl Early Dual Prime Movers
U50
Union Pacific- 15
Southern Pacific- 3

EMD 12 cylinder 567 with Dual Prime Movers for EMD "E" Units
First made in the late 1930's the EMD 12cyl 567 Prime Movers were the power houses in many of EMD's Switchers. At the same time, EMD found they could put 2 of these Prime movers together in one carbody to create a more powerful locomotive. Often geared for passenger service the E Units were created.
Locomotives:
E3
E4
E5
E6
E7
E8
E9