I've tried this and found that encoding to MP3 changes the timing of the audio (changes the number of samples). When decompressed it makes timing sensitive material hard to work with. The solution I found was to convert the files to an AIFF or WAV file with IMA compression. This compresses the file 4:1 and when you decompress, it has the exact same number of samples you started with. The only side effect is a little bit of fuzz (kinda like 8bit, but not as bad). On the Mac - SoundApp will save as IMA AIFF or WAV files. It will also convert back to SDII. On the PC - CoolEdit will save as IMA WAV files. I found this way was fast, cross-platform, and free. I worked on several projects with a guitar player on the other side of the world using this scheme. By the way, use FTP to send/receive your files, email is not reliable. Jeff ----- Original Message ----- From: Hanno di Rosa <dirosa@...> To: <logic-users@onelist.com> Sent: Monday, November 22, 1999 9:06 PM Subject: [LUG] Re: OT-Audio Compression > From: Hanno di Rosa <dirosa@...> > > From: "Charlie de la Rosa" > I'm needing to send large audio files (20mb to 40mb) over the internet and > wanted to know what the consensus was on audio compression apps. > > I guess the Mpg3 encoder and decoder can do that , and were invented for that. > There is a vast number of companies offering encoders I guess macamp is one > of them. > I have never checked the quality of re-decoded mpg3 files into SDII , but > if you want to send audio via the net , mpg3 is the best way to go. > ciao >