In order to play these musics, you will need Compute's Sidplayer or any compatible player. These can be found in the /pub/cbm/c64/audio/players or /pub/cbm/c128/audio directories.
Mirror sites: FUNET (ftp http) ibiblio.org (ftp http) – General information – File types – CD-R snapshots – Data transfer
cbm-adm@ftp.funet.fi