We do not collect any data at all. whether it's personal or not.
Mpzik is not setting any Cookie but some third party library and partners can do (Such as Facebook, Google)
As we said, no mp3 songs or mp4 videos are stored in our servers. All what our software is doing is to converting (when needed) and piping data to the client on the fly. The source of this data is 100% Youtube and in no temprary step it's stored in our CPU based servers.