Question What file formats are supported by Spark 

Spark supports many common audio file formats. All versions of Spark support:
  • AIFF
  • WAV
  • W64
  • SDII
  • Split Stereo Files (L & R to stereo)
  • Additionally, SPARK LE Plus and SPARK XL also support:
  • MPEG Layer3 (MP3)
  • QuickTime and all formats supported by QuickTime, including AAC (MP4)
Please note: Spark has been discontinued since 2004.