Spotify has nearly all of Ilayaraja’s hits. To get MP3s, use a Spotify Premium account + a third-party downloader (like Allavsoft or Audacity record function) for personal backup. Note: Only download songs you have purchased/stream rights to.
Use 7-Zip (free) to compress the folder.
"Digital music should be easier than this," he muttered, clicking on a forum link from a group of dedicated audiophiles.