Hello Jason,
I believe I see the file you are referring to within your account "converted_file_37ab22c5__1__by_-da3k1pv.wav", however you will see that this file is a .part file. The .part indicates that the file was not completely uploaded. This means that upload process was either stopped prematurely or there was a temporary network issue. In either case, you will not be able to download a file that was not successfully uploaded to the system.
If you had a previous version of this file housed on DriveHQ previously, you will be able to use our file versioning feature to rollback to a past version. Otherwise, you will need to reupload and share the file making sure that the upload process was complete.
Please keep us posted with other questions.
Best,
DriveHQ Support
www.DriveHQ.com