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I was looking at VHDL for the demo apps, it seems a bit double in it's expressions but slowly grasping it. So you say Verilog is worth checking out for audio, or am I going to hit a major wall somewhere?
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I may catch a lot of FLAK for this but I'd suggest you take a good look at VHDL first. It can do a few things Verilog can't like multi-dimensional arrays, nice functions and
procedures.It has strict typing, which may look heavy in the beginning but you will get used to that after a while (and eventually end up liking that). There are a few VHDL editors that flag those syntax (and other) errors. E.g. Sigasi is a nice one, and for small projects it is free. There is also Emacs VHDL-mode.
Verilog is often said to be more C-like, IMHO it isn't, but the 'inventors' put this down as a sales argument against VHDL, which effectively has it roots in the Pascal / Modula / Ada languages. Now I remember that C in the 80's allowed a lot of assignments without warnings, wreaking havoc at some point or later. In that view Verilog may be C-like ;) My boss at the time used to say: "If you get a Pascal program compiled, it will run to some point. If you C-source compiles, you are nowhere yet."
There is also MyHDL, which is a Python based, it simulates fast and outputs either VHDL or Verilog for your Quartus project. Unfortunately it doesn't take advantage of VHDL's extra capabilities as it purposely supports both back-ends on an equal basis.
There is also Cx and PSHDL, but those are not quite complete yet.
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