Shin-seiki: If I wanted to really reach, I could relate the line "…I have to go back" and this cut of him switching from track 25 to track 26, to the ending of #25, where he has chosen to "run away" into a solitary world of his own, and the end of #26, where he choses to come back to the real world.
Soluzar: Are you sure it's reaching? Shinji must return from blissful isolation to face reality, then as now. That, coupled with the display on the S-DAT makes it a potential case of foreshadowing. I wouldn't be so quick to dismiss that as a theory.