Poor platform support. No Linux version at all, and their Windows version is lame. Poor format support. I don't care either way about Ogg, but no FLAC suppor

Poor platform support. No Linux version at all, and their Windows version is lame. Poor format support. I don't care either way about Ogg, but no FLAC support is a deal killer. There's a FLAC plugin, but it requires using 32-bit iTunes, and even then it's not supported very well. It insists on "managing" my music collection itself. It's constantly renaming, moving, editing ID3 tags, and what not. I think most of those features can be turned off, but it takes forever to figure out what all the options are, and by the time you realize they need to be turned off, it's generally too late and you have to pull the altered songs from backups. It also doesn't handle poorly tagged music very well. For example, a while back I had a two CD collection of trance music, something like "The Best Goa Trance of 2010". The MP3s were tagged with the artist and song names, but no album name, presumably because they were originally on different albums. In iTunes there's no way (that I know of) to group the songs in my library, except going through and manually adding the album tags. This is made even worse by the default settings where it moves around and renames the files without telling you. I'm sure I could train myself to immediately fix all of my music's ID3 tags, and to conform to Apple's arbitrary way of managing music, but it's easier to just use a different player.