sauditor is a sample auditor that is intended to be simple and quick to use. It allows you to quickly and easily search for the sample you want. It features a curses interface, with no mousing required, and a toggleable X spectrum analyzer. The spectrum analyzer lets you see the frequencies present in your samples, which is handy if you want an idea of how much "space" the samples take up in the mix. It uses Jack for output, which allows you to connect filters to the output.
Powernap is a small Python extension for accurate sleeping. Python's time.sleep() function is fairly inaccurate. It is definitely not accurate enough for music, games, or graphics. It can sleep too long or too short, and usually does. Using Linux's real-time clock (RTC) allows for more accurate timing. This extension wraps all the messy RTC stuff and provides nap(), which performs the same job as sleep(), but more accurately. Even more usefully, it provides rnap(), which is a padding nap. That is, if you call rnap(30), it will nap for however many milliseconds are required to make the time since the last nap 30 milliseconds. rtc_on() sets up the real-time clock, and rtc_off() turns it off. It also switches the scheduler to SCHED_FIFO.