As the creators of DLXS, we're quite impressed with the adaptation of Text Class by NLM/NIH to provide access to oral histories. The following is an excerpt from the press release.
The National Library of Medicine's History of Medicine Division is pleased to announce the release of a new Web interface (http://www.nlm.nih.gov/hmd/manuscripts/oh.html) to its oral history collections, as part of its growing electronic texts program. Content includes digital editions of transcripts and any accompanying audio content when feasible. Users can browse content by title, interviewee name, and subject. Full-text searching is available across all sub-collections, across each sub-collection, and within each transcript.
Browse the Archives and Modern Manuscripts Oral Histories to jump right into the audio content.