Hello looks that the problem in subject is quite popular for the website www.mixcloud.com After having tired ALL the possible 1. totally wipe cache 2. remove all coockies for the domain mixcloud.com 3. restored firefox The first solution I have found to work around the problem has been to use Firefox anonymous window and it worked for some amount of days Now it stopped playing also the anonymous window Currently to play mixcloud.com I'm obliged to use Google Chrome (unbelievable) Is all of this possible?!?!?!??!?! Eventually thank you for something more to attempt or for a working solution After some time of happy listening of tracks on mixcloud.com it begins this nightmare What in the attached screenshots appears right after ANYONE of the play buttons you can see in the screenshots So apparently the player is ready but the behavior happen when the play event is shooted