Hi, @janebergy
When you say "It only goes up to 15 mins and stops", do you mean the actual playback stops at 15 minutes, or you can only see 15 minutes of the audio?
If it's the latter, you might just need to zoom your view out. Select View > Zoom > Zoom Out Full (All Axes).
If it's the former, I've seen that happen before for various causes.
- Is the audio file on a removable drive, cloud storage, or network storage? If so, copy it to your desktop and open that copy in Audition. Does the whole thing show?
- The audio might be corrupted or have been made by an application that doesn't make "clean" compliant MP3s. Open Adobe Media Encoder, which is an application already installed on your computer (even if you didn't know it). Drag your MP3 file into Adobe Media Encoder and have it convert the file to WAV. This article should help you. Then open that resulting WAV (again, from your desktop) in Audition.
- Close all other applications on your computer, especially any other Adobe or Microsoft applications, or any other video or audio editors, before you launch Adobe Audition and/or open the audio file.
It's also entirely possible that your computer just doesn't have the system resources to allow Audition to edit the file. Windows Media Player can buffer the playback, loading only parts of a large file at a time, but Audition, as an editor (a Digital Audio Workstation) needs to load the entire file into memory in order to show it and allow you to work on it. It might be that you don't have enough RAM, free harddrive space, or processing power available to Audition. Have a look at Audition's system requirements and let us know how your computer's hardware compares.
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