What's the longest you ever played a song on loop?

[Xolerate²]

Attack on Titan opening theme.

About 5 hours.

[Ad Bot]

[Katadeus]

Likely somewhere around 8 hours.
HTDA - Ice Age (deadmau5 remix) was one of those things
I forget what else, but I'll often put stuff in soundcloudrepeat or youtuberepeat.

[Maxwell.]

an hour

[Niff]

I've had Open Your Heart 30 minute version up for about 2 weeks once, you can do the math

[Dino5678]

I've had this running for the whole video, it was able to last too at night.
When I wake up in the morning it was still going but after 30 minutes it was over.

[dudeman162]

Boards of Canada - Cold Earth for like 3 or 4 hours a day.

[Assistant]

http://www.youtube.com/watch?v=FIcxqVRLEWI

This song for 4 hours.

[SquartleTurtle]

ive played space dispute for like 9 hours before

[Yin Yang]

http://www.youtube.com/watch?v=jI-kpVh6e1U

[Pie Crust]

Around the world for 4 days straight and then Aerodynamic Beats for 7 hours.

[hodot]

once played Lazy Eye by the silversun pickups on loop for like days on end

i'm still not tired of it

[Cut Glass]

Sail - AWOLNATION... 12 hours. Also should note Sail has 3900 plays on my iTunes.

11 Days, 5.75 Hours of Sail.

[SWAT One]

I played some stuff from Fullmetal Alchemist: Brotherhood for like 13 hours.

[Bomb Kirby]

Longest I've played music was Keyboard Cat for 2 hours, but that was part of a bet.

Longest I've played music at my own will was Mario Kart Wii Koopa Cape for 45 minutes.

[Momentum]

ever since it came out.
http://www.youtube.com/watch?v=cR2XilcGYOo