I've recently created a 256GB USB stick with tons of music. Mostly either MP3, AAC or FLAC format. It all works well - album art works, sound quality is good, etc. - but there is one problem. Every time I get in the car it takes about 10 mins to load the music from the USB stick before you can listen. There doesn't seem to be any caching going on to avoid this each time. Any ideas? I'm using A Lexar stick formatted in the FAT32 format.