ps simon if you surf the net , i understand there is a way to bypass that audio problem.
The ways around the audio issues on the Pi are either:
1: use HDMI (only works if your monitor has speakers built in, and supports audio over HDMI - not all do).
2: Use a USB sound card or audio interface (costs money).
3: Use a DAC that plugs onto the Pi's GPIO header (costs money).
I'm not certain of the state of DAC's on the Pi these days, since a number of them were discontinued. Most I know of are inexpensive and good, but don't have any audio input, only output.
That said, with some work happening on a Windows/x86 emulator on the Pi, it may someday be able to run Realband on it, though likely quite slowly or with issues.