From EJ Enteprises:
Ultra Recorder can play and convert sounds stored in a variety of sound formats (see the help file for a full list). Ultra Recorder features disk based sound manipulation. You can play and convert all supported sound formats directly from your disk drive. This means, while manipulating sound files, you will never see another out of memory error again! Ultra Recorder can open sounds inside folders, disks, and it will even resolve aliases. Just drag a folder, disk, or alias over Ultra Recorder's icon, and it will play all the sounds inside. Ultra Recorder also supports Apple's Drag and Drop, which allows you to drag and drop a folder, disk, or alias over Ultra Recorder's windows, and the sound will begin to play. Ultra Recorder has a state of the art recording interface (not the old fashioned Record Dialog Box that System 7 uses). It even allows the recording of sounds in the background. Ultra Recorder customizes its own menus to meet the features of the sound device you are recording from. Use Ultra Recorder to unlock your sound device's full potential! Ultra Recorder can also record sounds in a variety of sound formats. If your hardware supports it, Ultra Recorder lets you record all but System 7 sound files directly to your disk. This means that you can record for as long as you have disk space available.