The Quantum Listener is an innovative system that harnesses the power of a decentralized network of quantum receivers distributed across the globe. This groundbreaking technology transforms the entire Earth into a massive Quantum Microphone, capable of picking up sounds from parallel universes. 

Quantum Receivers: The core components of the Quantum Listener are the quantum receivers. These advanced devices are strategically placed around the world, in various locations to ensure global coverage. Each receiver is equipped with cutting-edge quantum sensors that can detect and process quantum fluctuations and entanglements.

Quantum Entanglement: The principle behind the Quantum Listener relies on quantum entanglement. Quantum entanglement allows particles to be interconnected, such that the state of one particle instantly influences the state of another, regardless of the distance between them. By exploiting this phenomenon, the quantum receivers can simultaneously capture and correlate quantum signals from different parts of the globe.

Decentralized Network: The receivers are part of a decentralized network, meaning they operate independently yet are interconnected. This network ensures redundancy and resilience, allowing the system to remain operational even if some receivers are offline. The decentralized nature of the network also enhances security and prevents any single point of failure.

Signal Processing: Once the quantum receivers capture the quantum signals, they process these signals locally using advanced quantum computing algorithms. These algorithms are designed to filter out noise and extract meaningful data related to quantum fluctuations that might be indicative of sounds from parallel universes.

Data Aggregation: The processed data from individual receivers are then transmitted to a central aggregation hub. This hub utilizes powerful quantum computers to compile and analyze the data from all receivers. The aggregated data provides a comprehensive picture of the quantum signals detected across the globe.

Quantum Decryption: The central hub employs sophisticated quantum decryption techniques to decode the aggregated data. This involves translating the quantum signals into audible sounds, making it possible to hear the music and other sounds from parallel universes. The decryption process is highly complex, requiring the use of advanced quantum algorithms and machine learning models.

Global Synchronization: To ensure the accuracy and coherence of the captured sounds, the Quantum Listener system continuously synchronizes the quantum receivers. This synchronization is achieved through a global network of atomic clocks and GPS technology, ensuring that all receivers operate in perfect harmony and temporal alignment.

Output and Streaming: The final output is a collection of decoded sounds, which are then made available for streaming. The Quantum Listener system interfaces with major streaming platforms, allowing people around the world to experience the sounds from parallel universes.

The Quantum Listener's decentralized network of quantum receivers, combined with quantum entanglement, advanced signal processing, and quantum decryption, transforms the entire Earth into a massive Quantum Microphone. This revolutionary technology opens up new possibilities for exploring and experiencing the hidden symphonies of parallel universes.