The story started off effectively enough—with a murder—giving the reader and the characters a mystery to solve. But much of the story was contained in the head of the protagonist as she fretted about what to do and replayed the list of possible suspects over and over again. There would be brief snippets of dialogue with her colleagues, after which she would run around "wondering" about this person or that person, or some bit of evidence.
As the title implies, the plot revolves around an accidental recording made of the murder. The protagonist discovers this, puts it on a CD, then runs around for an infuriatingly long time before actually listening to it. Pages and pages are spent as she thinks about it in her purse, wondering what it might reveal. The reader just wants to snatch it from her and say "Listen already!" Then, even after she hears it, she learns nothing new, then runs around thinking about it some more.
The rest of the characters do nothing to advance the plot. Occasionally one will do or say something to cast suspicion on him- or herself, but these are always red herrings and the reader soon begins to dismiss them as soon as they occur.
The resolution comes when the protagonist finally applies the skills for which she is renowned and analyzes the disk scientifically, isolating a single anomaly that leads her to the killer's identity. The reader is left to wonder why this wasn't entirely possible two hundred pages earlier.
The writing itself betrays an amateur author, though it's not nearly as egregious as many of the self-published novels I've tried to read. I was actually able to finish this one. The problems in this novel are not so much the blatant grammar and usage errors so ubiquitous elsewhere, but are of the style and voice variety that one learns to avoid in a basic writing class: too many dialogue tags of too many types (in one two page stretch there were 26, 22 of which were unique: shrieked, ordered, noted, announced, agreed, scolded, cried, and so on), too much inner monologue, not enough action, flat plot and character arcs, too much obvious exposition, shallow supporting-character development.
It might have worked as a short story, but other than a murder, the discovery of a telltale recording, and a one-page struggle with the murderer when confronted, there just wasn't enough of a plot to sustain a full-length novel.