I have tried everything to get my itunes to work. I have re-downloaded older verisons which won't work because I have the lastest verison I have tried troubleshooting still won't work... I have uninstalled and re-installed about 35 times now and nothing

Question

HELP ME PLEASE!!!!!

Answer 1

Hi,
You can have monitoring latency and hardware latency and this sounds like hardware latency. What interface do you have and have you done a loopback test?
"Even when I record with the track muted, and I have tried this several times with vocals that are dead on time. When I play it back the track is slow. I know they're recording right, because I can drag the entire track forward a little and get it to sync"
Because you can drag the whole track forward it means that  your vocal, despite being in time with itself, is not in sync with the already recorded tracks.
Do a loopback test.
Record a transient sound (hi hat is good) make sure it is dead on the beat, use a midi hi hat and then turn it into audio, Route the recorded audio (hi hat) out of your interfave and then back into your interface to record it on a fresh track. Make sure you don't route them to the main outs to avoid a feedback loop.
Once you have both tracks of hi hat zoom in. The second track will be out with the original and this is the latency of your interface. Zoom right in, you can use the timeline to calculate how many samples it is out. My Motu 828 Mk2 is 58. You then offset this in the Recording Sample offset in your Preferences (not in front of Logic right now so I can't remember the exact term).
Once you have set the offset, do the loopback test again, you can keep all the tracks just make sure you're always using your original, smack on the beat track as your original.
Once the re-recorded matches the original you will have compensated for your interface latency. You do not need to change this if you change sample rate or bit depth. Once you have set it, it stays that way.
Try it and see how you go. If you get stuck there are a few other walk throughs of a loopback test on this very forum.
Hope it helps.