When PSM first appeared, there was some study of where the boundaries for each segment were. It seems like PSM extended is more complicated... I can only clearly distinguish Advance Adventure, Soko-ni sora-ga aru kara; just faintly hear Polka O Dolka... It also seems as if they've also had more than one segment per song...
Advance Adventure: 0:00 - 0:58 (The WAKU WAKU line, followed by the first few verses)
Challenger!!: ???
Smile: ??? (The segment sounds like Smile, but I can't really identify any verses)
Polka O Dolka: ??? (There seems to be a long bridge leading up to this segment; you can clearly hear the Polka O Dolka line at 4:10)
Soko-ni sora-ga aru kara: 4:27 - 5:04
Advance Adventure: 0:00 - 0:58 (The WAKU WAKU line, followed by the first few verses)
Challenger!!: ???
Smile: ??? (The segment sounds like Smile, but I can't really identify any verses)
Polka O Dolka: ??? (There seems to be a long bridge leading up to this segment; you can clearly hear the Polka O Dolka line at 4:10)
Soko-ni sora-ga aru kara: 4:27 - 5:04