"Spiro" is a locked-groove track included on the "Warp20 (Infinite)" vinyl of the "Warp20 (1989-2009)" box set. All the loops on the disc are 1.8 seconds long if played at 33rpm, and so is "Spiro".
The snippet originates from a Track 3 performed by Boards of Canada at Lighthouse Party in 2000. The locked-groove version is considerably pitched up.