What is the best format for the Soundfly to use (NTFS, FAT32, etc.)? John September 29, 2018 10:56 Updated Follow Any drive connected to the Soundfly AUX should be formatted under FAT32. Related articles What is the best way to store MP3 on the the SD card / USB Stick to get the maximum number of tracks? If i was to save each CD in its own folder am i right in thinking i could only have 99 CD's on each SD card or USB stick? How long is the transmission range? 50 meters, 1km? Can Soundfly SD start playing from same point where I left when car gets turn off-on? Does it support and transmit in stereo from USB, SD card and aux in? Comments 0 comments Please sign in to leave a comment.