It was an attempt to make an open, cross-platform rival to iTunes, but you needed the Apple, MS etc. apps installed to get the codecs & authorise playback. At launch it couldn't directly rip or burn audio CDs.
They dropped Linux support, it was forked as Nightingale to keep Linux support, but both forks flopped and were discontinued. Streaming stuff like Spotify turned out to be more popular.
Personally I think it is partly what led to the rise of simple lightweight music players such as Foobar 2000, Rhythmbox, Pragha and so on. OTOH there are now so many of those that developer talent is spread very thinly, and we might all be better off if there were just 2 or 3 leading ones with more substantial teams behind them.
I was just trying to warn you of the risks of using a name that someone else has already used...