Hey there, welcome to MeizuMe!
There is no program like iTunes for the Meizu players. You just handle it like a removable mass storage device, and drag and drop your music there. The player will automatically create/update the music library based on the ID3 tags of the songs.
(For better organization, you should put the songs inside the "/MUSIC" folder and organize them e.g. by "artist/album")
Unfortunately, there are a few limitations regarding ID3 tags, and you need to have them in mind for the songs to get recognized:
1) You can use ID3v1 or ID3v2, but not both;
2) Album art embedded in the ID3 tags is not supported (you can still add album art, but that is a bit trickier - use the forum search and you should be able to find some tutorials);
3) Not all ID3v2 tags are supported, but I can confirm that at least the following will not give you problems: title, artist, album, genre, year, song name, track number, sample rate, bit rate (you can try more tags, but I'm not sure about those);
Good luck
PS: The MeizuMe user
ForceDragonX is developing a nice piece of software to manage the Meizu players, called
MeizuCenter. It's still in an early stage of development, but in the near future it might become just the program you're looking for.