Here's the .SEQ info I have, but I'm making no claims about its reliability:
SEQ is the PlayStation sequence data format.
Format:
____________________________ Byte count
| ID (SEQp) 4
____________________________
| Version 4
____________________________
| Resolution of quarter note 2
____________________________
| Tempo 3
____________________________
| Rhythm 2
____________________________
| Score data Any
____________________________
| End of SEQ 3
____________________________
I probably won't be much further help if you have any questions regarding the above, but, if you do, I'll give them a stab.
I have similar .TMD info, but it would make for an *extremely* long post. If you really need it, let me know.
-Srethron