In the previous chapter, we implemented the user interface of the music player, but it is unable to play any music. We'll tackle that challenge in this chapter. We'll create the engine of the music player so that it can play MP3 files. To do this, we'll need to use threads so that playing a song does not freeze the interface, so it will be a good opportunity to learn about concurrency in Rust.
We will cover the following topics in this chapter:
- MP3 decoder
- Threads
- Mutex and Mutex guards
- Send/Sync traits
- RAII
- Thread safety
- Interior mutability
