Duane: I suspect Book Wizard has no problems with 22.05K wave files. The advantage to the 44.1K files is that you get better high frequency content. The disadvantage is the size. If you don't have any content that is above 11K in the files, I would probably go with the 22.05K sample rate for archiving your wave files. In my personal life, I usually compromise and use 32K, but it is too late for you to do that. If you decide to resample, use the highest quality setting for the resampler of your choice, and be prepared to wait a while for each file. Reasons Why You Might Not Want to Convert to 22.05K: 1. not all devices can play 22.05K files. If this is the case, you would have to up-sample while converting to MP3, which sounds like a tremendous waste of time. 2. Storage prices continue to fall. If you already have it in 44.1K, you might want to keep it, knowing that storing it in the future will be faster and cheaper than storing it now. You can get a portable 500GB drive for well under $100 these days. Good luck with your decision. Rob -----Original Message----- From: studiorecorder-bounce@xxxxxxxxxxxxx [mailto:studiorecorder-bounce@xxxxxxxxxxxxx] On Behalf Of Duane Iverson Sent: Friday, September 25, 2009 6:53 AM To: studiorecorder@xxxxxxxxxxxxx Cc: bw@xxxxxxxxxx Subject: [studiorecorder] Questions about Audio files and conversion to MP3. For years I have been boring everyone with bleggs and bloggs about my bible project. Well, I have the whole new testament and the first five books of the old testament digitized. I have been using the following format 44.1k 16 bit mono. There are good reasons why it would be convenient to go to the format 22.50-k 16 bit mono. One reason is that I end up having to record at double speed. I can record at 88.k drop the format to 44.k. I can record at 44-k, run the recording through the clean up software, drop to 22-k then resample. Using the 44-k recordings I convert to mp3 using 64-bit high quality settings. Would I lose any quality by converting all audio wav files to 22-K? If I ever hear from Book Wizard can that program work with 22-k wav files? What are the advantages and disadvantages with 44-K except for the larger size? Sincerely Yours: Duane Iverson