Hallo Harilaus,

wie gut ist dein Englisch? In den FAQ ist dein Problem beschrieben:

-> http://www.pgmusic.com/techfaq17.htm#80
bzw. auch http://www.pgmusic.com/techfaq17.htm#145 oder http://www.pgmusic.com/techfaq17.htm#115 (siehe Anmerkungen im Text):

80. I get a message that a MIDI driver is "...installed properly but currently in use by another program", even though there are no other programs open.

This error will often refer to "Roland VSC", "GS Wavetable", or "No MIDI/Sound Output". Find out if you are using ASIO or MME drivers (Opt. | MIDI/Audio Driver Setup | [Audio Settings] - Audio Driver Type)

If you are using MME drivers and the error is referring to the Roland VSC, see FAQ topic 145 instead.

If you are using MME drivers and the error is referring to a driver other than the VSC (less common), see FAQ topic 115 instead.

If you are using ASIO drivers, you may get this error if there is a conflict between the ASIO driver and a (non-DXi/VSTi) software synth selected in your driver setup. This happens on some computers when using the ASIO4ALL driver. To resolve the problem, make sure that the GS Wavetable and other software synths aren't selected anywhere in your setup. In other words, select a driver other than a software synth in the Band-in-a-Box MIDI Driver Setup dialog (output driver), and in the Windows control panel | Sounds and Audio Devices | Audio (MIDI Playback). Usually if you are using an ASIO driver in Band-in-a-Box, you will also be using a DXi/VSTi synth. Leave the "Use DXi Synth" box checked. You just need to select a different output driver, it won't affect the sound through your DXi synth. Ideally, select a driver for a hardware synth on your sound card or the MIDI OUT port on a MIDI interface.

Ich hoffe, das hilft dir weiter ...

Gruß - Alex