Hi It sounds like you recorded the sessions referencing a 48kHz clock when your session was set to to 44.1kHz. If you are on Pro Tools LE 6.x you can use DigiBase to correct this . All you have to do is find the audio files in question, scroll over to the sample rate field, and type in the "correct" sample rate (the one they were actually clocked to during recording). Also, there is another workaround that may be faster and simpler, particularly if there are a ton of audio files to modify: Open a New Session at the "correct" sample rate, then do Import Session Data and select the session in question. Make sure to choose "Copy from source media" and "Apply SRC", but then change the Source sample rate to the "correct" sample rate (this will make it look like your "converting" from 48k to 48k (for instance) which may seem counterintuitive. In reality all you really are doing is changing the sample rate tag on the audio files, so you definitely don't want any resampling to happen. Let me know if you are on a version older than 6.x and we can suggest some other things. Thanks, Digidesign Tech Support