Hmm... no idea what the sound issue is, it is working on my browser so I would have to look into that.
The spinny blue guys are what you should collect and bring back to the start. They shouldn't put you back at the start as you touch them though. Maybe you accidentally got caught by an enemy who you didn't see.
We definitely tried to go for a spooky, eerie vibe so really glad you think we got it right!