Download the free trial versions of DAW software.Ableton Live or Traktor come to mind.
really any audio editor should do what you need:http://en.wikipedia.org/wiki/Comparison_of...l_audio_editors
> In any case, Audacity could do it with four tracks playing together or individually in any combination.It fails to meet the requirement for switch on single keypress, AFAICT.
Might the ''Solo'' buttons, found at the left of each track, fit your requirement for track switching?
what you are looking for is application which would allow reading two consequent files from playlist in memory (relative to currently playing tracks) and provide programmable seek timer. I don't know of a such, and I guess you'll need to hire programmer if you need this exact feature
results on XP:1. ASIO output (regardless playback output buffer) produces gap or 34ms 2. Kernel streaming with playback buffer of 50ms, produces ~ 21ms gap3. DS has a biggest gap, but you could use some fader DSP component to make transition almost seamlees (not builtin fader which is tied to playback buffer and always produces gap)
Well, foobar2000 with ABX has this feature. Just that it doesn't work will full quality.
> foobar2000 with ABX component can do exactly what you want with TWO tracks. Thanks. It fails on "seamless" here, usually issuing a click upon switch.