I got Sega Mega CD games working in Picodrive with CD music..
I use cue+bin.
How I did it was click Browse on Game Manager then pick say Batman Returns.bin then add all the other stuffing,then it will start to copy of the bin file over to the sd card,Now copy the cue file over and name it the same as the bin file so Batman Returns.cue but if game manager has changed the name,it will remove the space in the 2 words so BatmanReturns.bin make sure the cue file has that name in it.then it should find the game and run it like normal.
All the Mega CD games I have I made so I made sure the cue files would find the music on the bin files.
This is what Batman Return.cue looks like... I have change the name of the bin in it.
FILE "BatmanReturns.bin" BINARY
TRACK 01 MODE1/2352
INDEX 01 00:00:00
TRACK 02 AUDIO
PREGAP 00:02:00
INDEX 01 01:57:32
TRACK 03 AUDIO
INDEX 01 02:04:18
TRACK 04 AUDIO
INDEX 01 05:00:42
TRACK 05 AUDIO
INDEX 01 07:31:27
TRACK 06 AUDIO
INDEX 01 10:03:37
TRACK 07 AUDIO
INDEX 01 11:31:02
TRACK 08 AUDIO
INDEX 01 14:25:04
TRACK 09 AUDIO
INDEX 01 16:07:63
TRACK 10 AUDIO
INDEX 01 19:03:09
TRACK 11 AUDIO
INDEX 01 21:39:34
TRACK 12 AUDIO
INDEX 01 23:42:11
TRACK 13 AUDIO
INDEX 01 27:03:00
TRACK 14 AUDIO
INDEX 01 29:58:25
TRACK 15 AUDIO
INDEX 01 31:49:03
TRACK 16 AUDIO
INDEX 01 33:55:45
TRACK 17 AUDIO
INDEX 01 36:16:49
TRACK 18 AUDIO
INDEX 01 39:27:18
TRACK 19 AUDIO
INDEX 01 40:43:32
TRACK 20 AUDIO
INDEX 01 43:32:70
TRACK 21 AUDIO
INDEX 01 46:55:18
I love the music from Batman Returns so much I listen to it from the Mega CDs CD player, I like most of them, tracks,3,5,7,9,11,12,13,16,17,19,20,21 are good ..
some of the music you only hear for 10 seconds in the game but if you listen to it this way the track is like 2 minutes long well most of them are. its like they did it like this so you can listen to it like a CD. I like Soul Star Music too.
If you love Mega CD games like I do, Climb aboard Dog Meat,This is the Hole Hog and I am giving you a one way ticket to Solar City..
if you are after Mega CD games in cue+bin format and are copied properly, I can help you,I have a lot of PAL games I copied and made myself so PM me..