Instead of converting all your FLAC files to AIFF (which will require more disk space), you should try the Pure Music player. A free 15 day fully functioning demo is available on their website at http://www.channld.com/puremusic/. I tried both Amarra and Pure Music and they both sound great. Pure Music costs only $130 and is much more flexible with their license. PM plays FLAC files using the iTunes interface. You don't need to convert your files. It's a very smart FLAC implementation that offers the best of both worlds, a great FLAC player using the iTunes interface and remote.