XymMS is an XMMS input plugin capable of playing Sega Genesis GYM files by rendering FM, DAC, and PSG signals through emulation of the YM2612 and SN76496 sound chips found in the video game console. It supports zlib compression and decompression, and other various settings for output quality, etc. You can compress and decompress files along with updating ID tags using the File Info window. WWW: https://sourceforge.net/projects/xymms/