Galaxy Music Player is probably the best choice for that. It's the fastest known MOD player for 8088, and it supports Covox/DAC on LPT.
According to the readme, it can play at 12 KHz rate on a Covox on an 8 MHz 8088.
You can download it here: http://www.dcee.net/Files/Music/Player/ (glx212.arj)

Scali wrote:

Galaxy Music Player is probably the best choice for that. It's the fastest known MOD player for 8088, and it supports Covox/DAC on LPT.
According to the readme, it can play at 12 KHz rate on a Covox on an 8 MHz 8088.
You can download it here: http://www.dcee.net/Files/Music/Player/ (glx212.arj)

Thanks. It worked fine on my 9MHz 8088.

Is there any demos running on an 8MHz 8088 that used LPT DAC?

For your infotainment: This is a link to my Schneider EuroPC playing MOD music with a Covox
https://www.youtube.com/watch?v=CsYdPPHaFao