.XMI

.XMI file extension

This is the basic program to work with .XMI extension

Winamp

Winamp Winamp media file

Winamp player is designed to cover the large area of video and audio media file types available today. The player comes with various types of new skins and visualization styles and is easier to personalize in both menu style as well as preferences , playlists, bookmarks, history, etc... (more)

The program works with the following extensions: mp4, wma, avi, wmv, flv, mpp, mp3, xi, au, it, xm, as, sf, gmd, mpg, ptm, m4a, w64, sdc, sds, hmi, rmi, s3m, m4b, aif, ape, hmp, snd, s3z, m4v, xpl, mpc, hmz, wav, stm, b4s, asf, wax, stz, pls, fla, asx, amf, mss, ult, sd2, mac, far, mus, voc, dts, mat, cda, xmi, wmx, wal, mp+, m2v, itz, aip, wpl, wsz, shn, m3u, mdz, med, wvx, xmz, mp1, wlz, mid, miz, dsm, aac, avr, ogg, mtm, mjf, apl, htk, ogm, vqf, mod, nsa, raw, paf, mp2, nst, caf, pvf, m4e, wpz, nsv, kar, rmj, cmf, okt, vlb, rmx, aiff, mids, flac, midi, mpeg, m3u8, audiocd and 669

.XMI extension is also supported by the following programs:

jetAudio

jetAudio Winamp media file

JetAudio Basic is a video and music player but it also can burn CD's,record,etc.
Miles Sound Tools

Miles Sound Tools Miles XMIDI sequence

Miles Sound Tools 7.2 is a package of utilities for adding sound to your games.