Malcy

The entertainment in my car is all in Japanese however I’ve had a band fitted so I can listen to stations in New Zealand so this will do for now (I have more important maintenance like gearbox and differential to service )
The other day I accidentally put the Hdd mode on ,I thought it had a cd left in it when I bought it until
l realised it was on the hard drive there are many different tracks on it sadly most in very old fashioned artists eg Frank Sinatra etc not really my choice of music
Can I remove and replace any of these tracking if so does anyone know how