"AudioCenter is an OS/2 audio front-end that you can configure to be used as a front-end for any OS/2 based audio program. It has been tested with UltiMOD, Muse/2, DMP 1.09, mp123, mpg123, maplay and Timidity using Warp 4." Also available is MikMod 3.1.9a, along with a plugin for PM123.
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Source: OS/2 News and Rumors