Gather them any way you can, but put them on paper. Recordings deteriorate and computer formats change. Paper is the only medium with a good record for family histories. While all elders are storytellers, few are writers. Encourage them to tell their stories for you to write.
Elders love seeing their stories in print.
Even more satisfying is knowing future generations will read them as part of their family history. If you don't have the time for interviewing your elders and writing their family history stories, consider hiring a professional . Future generations will thank you. While researching your family history, you may spend a lot of time gathering dates, places, and relationships. Decades from now, the public records will still be there.