$ fl2k_file
fl2k_file, a sample player for FL2K VGA dongles

Usage:
    [-d device_index (default: 0)]
    [-r repeat file (default: 1)]
    [-s samplerate (default: 100 MS/s)]
    filename (use '-' to read from stdin)

$ fl2k_file -s 8192000 -
Failed to open -