Here is the link to the Creative Labs product page where hopefully you can identify which product is yours:
http://us.creative.com/products/welcomenew.asp?category=948&WT.cg_n=Campaigns&WT.mc_id=8860#subcat957
When you find the correct model, just click on it and then on the next page click on the SUPPORT tab.
Then click on QUICK START USER GUIDE.
Then click on the red DOWNLOAD button beside EZ USER GUIDE ENGLISH.
Then accept the user agreement prompt.
After you click on that button, it will ask you if you want to open or save the file.
Choose SAVE.
Now Choose a location on your computer where you would like to save the file.
The easiest place is just right on your DESKTOP so it will be easy to find later.
Now click SAVE.
Once the download completes in about 5 seconds,
Click on the OPEN button.
If the document opens then just read it, or print it off if you want, or just leave it on your computer to reference when you need it.
If the document does not open, then you may need a PDF viewer program like ADOBE READER installed on your computer to read PDF documents.
You can download this free at
WWW.ADOBE.COM if necessary.
Click on the DOWNLOAD ADOBE READER button on right side of the ADOBE home page when you get there, the follow the onscreen instructions to install the software on your computer.
I think I would first of all try getting new batteries for the unit and fully charge them up before use. Then, if that is unsuccessful in resolving your audio issues, just check the owner's manual for your unit for the full reset instructions.
Please comment back here to this page if you have any details to add, have any questions, have difficulty accessing the links, or just require further general assistance and I will respond as soon as I see it.
Thank you very much and good luck.
Joe.