From Hoo Technologies:
MIDI to MP3 Converter converts MIDI to MP3. It is an all-in-one audio converter that supports more than 90 audio and video files. The software is fully compatible with Vista. You can change encoding parameters of target files such as sample frequency, bit rate, channels, and quality. So it is possible to convert a large size file to a smaller one. And, the software adds or keeps ID3 tag when converting. The software supports to change sound volume as well. The software also supports batch conversion. You can convert or resample a batch of files at a time. Supported input files: 3GP, 3G2, SWF, AAC, AIFF, AIF, AIFC, AFC, AMR, AWB, AU, SND, AVI, CDA, VOC, ADX, AC3, DTS, DV, DIF, VOB, DVD, CDATA, FLV, FLAC, M2TS, MTS, MKV, MKA, MJPG, MJPEG, MMF, MOD, XM, IT, S3M, MTM, UMX, MO3, APE, APL, MIDI, MID, RMI, KAR, MP3, MPA, MPGA, M2A, MPG, MPE, MPEG, M1V, MP2, M2V, MP1, MLV, M4A, M4B, MP4, TS, M4V, MPV, PSP, MPC, MPP, NSV, NSA, NUT, OGG, OGA, OGM, OGV, OGX, MOV, QT, H261, H263, H264, 264, RA, RAM, RM, RMVB, SPX, TTA, DAT, WAV, WV, WMA, ASF, WMV, WM, WMD, XWMV, and YUV. Supported output files: MP3, WAV, WMA, OGG, AMR, AWB, AAC, MP4, M4A, and M4B.