Initially, I recorded some songs and they played back fine. However, now they are extremely distorted. Even the demo song is distorted. I tried switching headphones, but that didn't work. Any suggestions?

Absolutely no context of what you are referring to!

All question need 'make model (what it is)' as first 3 words.

You posted to the category 'Audio Players', you have 10,000 categories to choose from :>D

https://www.google.com/search?q=song+doesn%27t+play+on+the+hour

..

Best non-professional answer removed as not good enough for OP :>D

Well friend,
According to page 24 of the manual here http://support.casio.com/pdf/008/ap_45_e.pdf
It says
Demo tunes
While holding down the MUSIC LIBRARY button,
press the PLAY/STOP button
.....and try to play a specific demo tune ........
After playback starts, press the tone button that
corresponds to the tune you want to play.from the list.

ALSO in the Troubleshooting section page 35 For DEMO tunes UNPLUG HEADPHONES

If it doesn't work, then you need to get a Technician to look at it.

please follow this steps and fix it. GOD BLESS you

• 1

Turn on all of the devices in your sound system. Turn off any auto-equalizers on your sound system to gain fullest control over frequencies. This switch might be found on the receiver or the equalizer itself.

• 2

Play a test song on repeat. Choose a song with both extremely high and extremely low instruments so that you have a wide frequency range to listen for.

• 
  
• 3

Listen for any obvious distortions in the highs and lows of the songs. Lower the knob on your equalizer for any distorted frequencies until the distortion disappears. Try at first to find the highest setting possible without distortion.

• 4

Adjust all frequency ranges in relation to each other to find a pleasing blend for your room, trying not to let any one frequency range dominate the others. Use the highest non-distorting settings found in Step 3 as maximum settings, but don't be afraid to lower a booming bass or a screeching flute that disrupts the overall blend of the music.

• 5

Play a song from a different genre to test how the EQ works for different types of music. A hip hop song will have louder lows than a string quartet, for example, so make sure your bass frequencies sound crisp on both types of music.

Remove power supply or battery for 5 minutes. Apply power while holding the on switch in, this usually resets most electronic devices to their factory default condition. Then look again.

what bit rate are your songs the best quality is 320 but anywhere from 128-196 is good

Same just happened to me. I was using SONY CD-R audio 80 min recordable CDs. One burned 3 songs, the other 4 songs before giving me the "CD write failure" message. I tried another brand of CD-R, TDK CD-R, certified plus, and it worked first time. It played on my CD player, on the Ion, etc - works. Maybe the CD burner in the device is very picky as to the brand or quality of the CD-R media? Try a TDK or other to see if that will do it.
-Good luck! Bill

When your record takes sound off...it does that for some reason, but just move them back into place..Or it may be something wrong with your speakers

yes they are lost and you would have to turn on write protection. better idea is dont use itunes invest in a better online catalog.

Make sure the songs are in the right format. Napster is a real bear about disappearing songs - try another music svc.