As you may already know, MIDI stands for Musical Instrument Digital Interface, and it is basically a standard protocol for communication between musical instruments and computers.
The program lets you transpose music, change the tempo, lower or raise the volume and more. If you want to modify your MIDI files' parameters and then save them, the program might be a good choice for you. Another good thing about this application, is that it will display your songs' lyrics in the main window (using MIDI karaoke files). Sweet MIDI Player comes with a preference menu that will let you set the program to remember file paths, automatically check for updates, suppress missing MIDI events warnings, etc.
This program can be used for free, but there are functions that cannot be used until you register it on the developer's website. The program is very easy to install and use. It doesn't take a lot of space on your hard disk..
Pros
- It lets you create playlists with more than 500 songs
- It's got a friendly interface
Cons
- None besides its price
It should have Soundfont support where you can load a SF2 file to change the way a midi file sounds on the GM bank.