Recommendations for QA process/problems with audio?

Hi

We are having numerous problems linked to our QA process. I was just wondering if anyone has any recommendations?

We used DropBox, but were then told that we mustn't work on the files directly but always download a local copy. We experienced corruption of our audio files and were told that this could happen when you work directly on the files in DropBox. The issue I am having with working on files locally is that we lose version control as we will inadvertedly end up with several versions. How have others solved this problem?

Another route we have tried is to use our network drive to share files. In addition to not having version control, we have noticed that the size of text boxes and text is changed from user to user. Where the course looks perfect for one user, if another user opens the same file (directly or copy and save as local copy), some text boxes/text have changed size. We have done some tests and believe that the operating system (Windows 8) could be the cause of this. Has anyone else experienced the same?

We have also looked into using SharePoint as our file sharing tool, but as Storyline is not a Microsoft product, version control via Check in/out does not work. 

Finally, we also experienced audio corruption problems on a course where audio was added locally. The audio played fine from within the in-built audio player. But when previewing the slide, the audio is corrupted, i.e., multiple repetitions of the same sound, like a stutter.

Suggestions, anyone?

Kind regards,

Kerstin