I couldn't find a FLAC rip of this albeit my extensive searching. So here it is. Boom. BOOM.
Taken directly from the game files. If you find any issues with the quality, tell me! I'll get to it as soon as I can.

Say thanks. I love you all.

All links work... Hopefully.
Free File Hosting - Online Storage; Upload Mp3, Videos, Music. Backup Files (http://www.peejeshare.com/files/363262402/Metroid_Prime_2_-_Echoes_-_Soundtrack_(FLAC).part1.rar.html)
http://www.peejeshare.com/files/363262510/Metroid_Prime_2_-_Echoes_-_Soundtrack_(FLAC).part2.rar.html
http://www.peejeshare.com/files/363262511/Metroid_Prime_2_-_Echoes_-_Soundtrack_(FLAC).part3.rar.html
http://www.peejeshare.com/files/363262509/Metroid_Prime_2_-_Echoes_-_Soundtrack_(FLAC).part4.rar.html
http://www.peejeshare.com/files/363262538/Metroid_Prime_2_-_Echoes_-_Soundtrack_(FLAC).part5.rar.html
http://www.peejeshare.com/files/363262454/Metroid_Prime_2_-_Echoes_-_Soundtrack_(FLAC).part6.rar.html
http://www.peejeshare.com/files/363262537/Metroid_Prime_2_-_Echoes_-_Soundtrack_(FLAC).part7.rar.html
Free File Hosting - Online Storage; Upload Mp3, Videos, Music. Backup Files (http://www.peejeshare.com/files/363262474/Metroid_Prime_2_-_Echoes_-_Soundtrack_(FLAC).part8.rar.html)

Can't believe no one has commented. Well, I'm downloading now. I'll compare to the Metroid database's mp3 rip and I'll come back and comment! I hope to god this is good because I want to hear Torvus Bog like never before!

awwww its gone. DX