All I could hear was what sounded like a couple of sneezes.
With consistent wheezing it can be due to a health problem, sometimes a very serious one, but sometimes if it's temporary and situational breathing sounds(meaning it only happens in certain instances such as when grooming) it could be due to other non life threatening problems such as a semi restricted air passage from the neck being turned excessively(like when grooming). I have rabbits that make noises when grooming and it's because their necks are turned restricting the air passage somewhat while they groom. When they are done and their neck is straight, they no longer make the sound. They are also dwarf rabbits and some have a more restricted air passage genetically causing some noisier breathing sounds with them in some instances. Some of these rabbits also usually snore when sleeping. This is something that is normal for my rabbits and not due to a respiratory problem. They are 6 now and have been like this all their life, just normal for them.
I can't say what is normal for your rabbit though, so if you are concerned it is a potential health problem, it's always best to have your bun checked by an experienced rabbit vet.
https://rabbit.org/vet-listings/