1. There are three categories here, records of Classical Guitar(sorted by performers in detail) / Johan Sebastian Bach(sorted by BWV No. in detail) / and others)
2. To listen to music, you need an application that supports ASX playlist in your PC, e.g. Windows media player, Totem, VLC(video lan client) player.
If you don't have any, I recommend VLC(download).
3. Also you can listen to music with your Smart Phone(Android Application).
4. or with VLC player for Android port(VLC manual link).
If you cannot listen, please send e-mail to me.(firstname.lastname@example.org)
Have a good time :)