That's funny, seems like a lot of us have built music players because none have seemed adequate :)

I built CloudPlay (http://cloudplay.fm) because I wasn't satisfied with Mac music players and none supported streaming from YouTube or SoundCloud. At the time, I had also been itching to build my first Mac app, so what better opportunity to learn Objective-C/Cocoa and improve my music listening experience?

It turned out to be a longer journey than it should have. I got most of it working in a month or two, but I spent too much time with unnecessary detours like:

- writing a low-level audio streaming framework that I scrapped once I discovered a higher-level API

- building a basic search index and deciding to use LuaJIT (!) to implement it, thereby requiring me to build my own Objective-C/Lua bridge, only to discover that the OS already provided a full-text search framework

Yes, I could've read the documentation more carefully, but it's also easy to get sucked down a rabbit hole building stuff from scratch for the sake of exploration. Sometimes building at a lower level helps you appreciate and understand the higher level and why you shouldn't always reinvent the wheel :)