I could reproduce the issue with sweep 0.9.2. I didn't even have to use a huge file, 60 files totaling 780MB were enough to crash sweep.
I opened the GUI from terminal and tried to open those files. It started to open them one by one, but at some point it crashed. --- Here is the output in terminal: sh-3.2$ sweep GLib-ERROR **: /build/buildd-glib2.0_2.16.6-3-i386-fvJQDr/glib2.0-2.16.6/glib/gmem.c:156: failed to allocate 654722288 bytes aborting... Aborted sh-3.2$ --- I was running Debian 5.0.7 (lenny) with Linux Kernel 2.6.26-2-686. I had 2GB of physical memory and 4GB swap. Versions of the packages were: sh-3.2$ dpkg -l | egrep 'sweep|libasound2|libatk1.0-0|libc6|libcairo2|libglib2.0-0| libgtk2.0-0|libmad0|libogg0|libpango1.00| libsamplerate0|libsndfile1|libspeex1|libvorbis0a|libvorbisenc2|libvorbisfile3' ii libasound2 1.0.16-2 ALSA library ii libatk1.0-0 1.22.0-1 The ATK accessibility toolkit ii libc6 2.7-18lenny6 GNU C Library: Shared libraries ii libc6-dev 2.7-18lenny6 GNU C Library: Development Libraries and Hea ii libc6-i686 2.7-18lenny6 GNU C Library: Shared libraries [i686 optimi ii libcairo2 1.6.4-7 The Cairo 2D vector graphics library ii libglib2.0-0 2.16.6-3 The GLib library of C routines ii libgtk2.0-0 2.12.12-1~lenny2 The GTK+ graphical user interface library ii libmad0 0.15.1b-4 MPEG audio decoder library ii libogg0 1.1.3-4 Ogg Bitstream Library ii libpango1.0-0 1.20.5-6 Layout and rendering of internationalized te ii libsamplerate0 0.1.4-1 audio rate conversion library ii libsndfile1 1.0.17-4+lenny2 Library for reading/writing audio files ii libspeex1 1.2~rc1-1 The Speex codec runtime library ii libvorbis0a 1.2.0.dfsg-3.1+lenny1 The Vorbis General Audio Compression Codec ii libvorbisenc2 1.2.0.dfsg-3.1+lenny1 The Vorbis General Audio Compression Codec ii libvorbisfile3 1.2.0.dfsg-3.1+lenny1 The Vorbis General Audio Compression Codec ii sweep 0.9.2-0.1 An editor for sound samples --- Aras Ergus