MuTools has released MuLab 8 which they say features Flexible Audio Sequences, Creative Time Stretching and many more improvements. Here’s more details in their own words…
Thanks to the new Audio Sequences you can now use samples directly in a composition, without the need to plug in (multi-) samplers and MIDI notes to play them.
Audio Sequences also let you play samples at a different tempo without changing the original pitch. This is done by slicing the sample into discrete audio events and each audio event is time stretched as needed. You have perfect control over the transients, the quantizing, etc. so any piece of audio can be blended into your composition, even if it's at a different tempo, pitch and groove.
Even better: The sample events in an audio sequence are not limited to the original sample. You can easily switch each sample event to play another sample, at another pitch, with another stretch factor. So, for example, you can replace the snares in a sample loop with one of the snares in your sample library, or with a different sound. Musical freedom and fun.
Last but not least: MuLab 8 also supports extremely high time stretch factors which let you make new sounds out of sample slices also within the MUX Modular synth and effect environment.