Definitely looks like it. I managed to come up with a preliminary rip of Ever 17, but it suffers from similar problems that I encountered when trying to rip Skies of Arcadia and Segagaga a while back. Seems like the problems are related to sound command 0x87, which I don't know too much about at the moment.
Test track rip-
http://h1.ripway.com/kingshriek/ever17_dsf_test.zipContents:
dsfmake.py - dsfmake script used to create rip
MANATEE.DRV - sound driver
EVER17_10.MLT - MLT file used to create rip
ever17_10a.dsf - w/ command 0x87,0x00,0x00,0x00,0x80
ever17_10b.dsf - w/ command 0x87,0x00,0x01,0x00,0x80