i like to listen to music while im playing is there any policy against having this in the run?

Karlson (Itch.io)

As of now all runs submitted that are possibly in the top 10 of their selected category are **required** to have their ingame speed displayed.

Runs submitted before this date arent affected by this.
Simply turn on the speed display whenever you speedrun , even if you dont think it will be top10. 
If a run in the top 10 doesnt have their speed displayed it will get rejected, unless we find some way to counterweight it and verify it somehow else.

Be sure to check out the updated game rules!

"How to Show Speed and FPS" : https://www.speedrun.com/karlson_itch_io/guide/q7ap1