This version of dyne:bolic comes with up to date software to record and manipulate audio: it is generally more stable and feature rich than the previous, so you'll hopefully notice the improvements while using it.
Ardour is the fully featured multitrack studio that offers the most advanced interface for your music recording studio. Combined together with other applications when necessary (it also uses Jack) it can really solve all your needs for audio mastering and music production. Check the online documentation for this valuable software on Ardour homepage: if you are a musician, the patience needed to learn it's usage and hotkeys is definitely worth the effort.
Audacity is a user-friendly audio editing program suitable to manipulate your audio files, interviews and recordings, separating or mixing them, applying effects and encoding in various formats. It can also be used to record audio straight away via its intuitive interface, which can be commonly found also on other operating systems since it is a cross-platform free application. A perfect choice to start manipulating audio.
Rezound is a well capable sample editor that lets you manipulate with good precision your music samples, record, loop and apply effects using an intuitive and complete interface, quite responsive also on slower systems.
TimeMachine is a simple yet very useful tool for recording audio, requiring Jack as a sound engine. It is simply a big red button: when you press it it will start recording starting from 10 seconds ago, so that you can record what you find interesting in an audio input just while listening. Whenever you press it records what you just listened, without the need to rewind the tape.