# Troubleshooting

All other tracks are on the track I recorded. What's wrong?
Your sound device is recording its own audio output. If your sound device includes a mixer window, you can look for the problematic setting there.

My vocals are only on the left or right channel.
Record to mono audio files. Microphones are mono, so recording to a stereo file results in one silent channel.

The track's Play or Rec button turns gray when starting the transport.
No audio or MIDI device is available to play or record this file.

I can't load my master file in my CD writing program.
Make sure the file is a stereo .wav file. If you're using the Pro edition, also make sure it's a 16-bit file (CDs are always 16-bit).

Can't load MIDI files recorded with MultitrackStudio in another application.
In the Preferences window, switch the MIDI File Format to "480 ticks per quarter note". This format is more widely supported.

There are glitches or short bursts of static in my recordings. or
A MIDI device seems to pause periodically. or
The transport stops with a "Buffer over/underrun" message now and then.
Close all other programs.

My audio tracks are out of sync. What can I do?
- Make sure you're using the latest driver for your sound device.
- Try using a sample rate of 48 kHz instead of the default 44.1 kHz (see Song Properties).
- If you're using different devices for audio recording and playback, you can create an "aggregate device" using the Audio MIDI Setup application and use that device instead.

My songs play back too fast. What can I do?
- If your sound device's control panel has a sample rate setting, make sure it matches the one set in the Song Properties window.

I want to restore a previous version of a file.
Song, songlist, MIDI, patch, and .aem files are backed up each time they are saved to disk. Older versions get a file extension starting with "~": .hdr, .lml, .mid, .ptc, and .aem become .~hdr, .~lml, .~mid, .~ptc, and .~aem respectively. You can restore an old version by renaming it with the correct file extension.