If you only want to listen to C64 musics, get a SID player.
Note: Runs on = Amiga, BeOS, DOS, Linux/Unix, Mac, Atari ST, Windows Emu = C64/128, PET, VIC20, Plus/4 (C16, C116)Currently best emulator (at least for Linux): VICE!
Runs on Emu
[A_______] [___4] A4 - [by Thomas König] - download
[A_______] [C___] A64 - [by QuesTronix, Hartford, CT, U.S.A.]
[A_______] [C___] AXF-64 - [by Børge Nøst]
[__DL____] [C___] ALE C64 (by johns@av.rwth-aachen.de)
[__D_____] [C___] C64 - Hercules mono card only
[_____R__] [C___] BreadBox - [by Daydream Software]
[__D_____] [C___] C64 Alive - [by F. Littmann] - very rough emulation
[__D_____] [C___] C64S, distributed by phs EDV - (by Miha Peternel) (also on funet)
[______S_] [C___] C64ST
[__DL___W] [C___] CCS64 - MSDOS and Linux
[__D____W] [C___] Come Back 64 - [by Johan Fitié and Brad Martin]
[__D____W] [___4] EMU [by Zsolt Prievara] - C16 emulator. WinEMU is for Windows.
[__D_____] [C___] Free64- [by Brad Martin]
[AB_LM__W] [C___] Frodo - [by Christian Bauer]
[________] [C___] J64 - [by Thomas Gruber] - Needs JAVA!
[____M___] [C___] Mac64
[A_______] [C___] MagiC64 - [by Michael Kramer]
[__D_____] [___4] Minus4 - [by Mike Dailly]
[__D_____] [C___] PC128 - [by Ulrich Meyer]
[__D____W] [C___] PC64 - [by Wolfgang Lorenz]
[__D_____] [__V_] PCVIC - [by Boris van Schooten]
[___L___W] [__V_] Pfau Zeh - [by Arne Bockholdt]
[__D_____] [___4] Plus4 - [by Lidovski V.]
[____M___] [__V_] Power20 - [by Roland Lieger]
[____M___] [C___] Power64 - [by Roland Lieger]
[__D_____] [__V_] VIC 20 - [by Lance Ewing]
[__D_____] [__V_] VIC 20 - [by Paul Robson]
[__DL___W] [CPV_] Vice - [by Ettore Perazzoli et al.] - mirror on ftp.funet.fi - best emu for Linux!
[_______W] [C___] Win64 - [by Ralph Mason]