Ah nice Kirino avatar... and i have also a load of Hatsune Miku.
rest on youtube i search randomly.
i also have:
初音ミク/Blu-ray 「ミクの日感謝祭 39's Giving Day Project DIVA presents 初音ミク・ソロコンサート~こんばんは、初音ミクです。～」 (in a MKV format)
Hatsune Miku Project Diva 2nd [PSP]
@ all ost/intro idk how manny i have like my anime list is 169 items here at work. without doubles even excluding some of the music. @ home i have abit more + youtube space keeps my hdd abit more clean too, listen mainly to tripshots, Ryo, and some others.