First of all, I am very happy to find this software. It is exactly what I have been looking for, an open-source lossless audio compression software. My question is not directly related to FLAC, but maybe the many audio experts here can help me out. I am in charge of archiving the lectures and speeches of a late church preacher. The recording was done with ordinary mic and tape recorder over the past 20 years. I decided to use WAVE format, 16-bit, mono, then FLAC it. But I can't decide if I should use 11 Khz or 22 Khz. Somewhere I read 22 Khz is cassette-tape quality and 11 Khz is only telephone quality. Is this true? Is there much difference between 11Khz and 22Khz for the kind of voice-only lectures that I am dealing with? What would you recommend? Thanks! -- Chuck Zhao