My friend's husband has provided more detail regarding the problem with WavePad and asks if anyone familiar with it would be willing to correspond directly with him to help remedy the problem.
The audio files are recorded 44.100kHz in record pad and sound fine when played in either record pad or wave pad before any editing has occured.
When the file has been edited and saved in wave pad a distortion quality is added to the file.
It seems that after any editing in wave pad the file is saved with formatting values, selected in wave pad, that introduce the distortion. The values displayed on the wave pad file format form are format: PCM, Attributes: 44.100kHz, 8 Bit, Mono, 43 kb/sec.
If the file is saved in either record pad or wave pad before any editing it is just closed with no attributes changed.
When we first started working with wave pad it saved files after editing just fine but after about a week the distortion occured and we don't know enough about audio to determin what went wrong.
We hope all this detail gives your friends in DU a better idea of what is wrong. Thanks.
If you are able and willing to work directly with him to help resolve this problem, please PM me and I'll give you his email address.