> Po użyciu innego renderingu niż tego co masz w standardzie używane przez mplayera powinno wszystko zacz±ć ładnie działać.

Sprawdzalem juz wczesniej, zanim napisalem na grupe. Sytuacja jest 
identyczna w kazdym przypadku (xv, x11, dga, opengl to juz zupelna 
porazka, itd.). Podobna sprawa ma sie z XMMS (tez zbudowany z pkgsrc), 
ktory ma sklonnosc do powtarzania 0.5 sekundowych kawalkow utworu po dwa 
razy - mpg123 zachowuje sie zupelnie normalnie. Podejrzewam, ze sprawa 
tkwi w konfiguracji ale zupelnie nie mam punktu zaczepienia z ktorego 
zaczac szukac. Na OpenBSD 3.2 (ktory wywodzi sie przeciez z NetBSD) 
wszystko dziala dobrze zarowno mplayer jak i xmms. Oto dmesg kernela 
jakiego aktualnie uzywam (czyli lekko zmodyfikowany GENERIC):

NetBSD 1.6.1 (EUKLIDES) #0: Tue May 13 03:57:17 CEST 2003
     root@euklides:/usr/src/sys/arch/i386/compile/EUKLIDES
cpu0: AMD K7 (Athlon) (686-class), 1668.79 MHz
cpu0: I-cache 64 KB 64b/line 2-way, D-cache 64 KB 64b/line 2-way
cpu0: L2 cache 256 KB 64b/line 16-way
cpu0: features 383f9ff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR>
cpu0: features 383f9ff<PGE,MCA,CMOV,FGPAT,PSE36,MMX>
cpu0: features 383f9ff<FXSR,SSE>
total memory = 511 MB
avail memory = 466 MB
using 6144 buffers containing 26292 KB of memory
BIOS32 rev. 0 found at 0xfb660
mainbus0 (root)
pci0 at mainbus0 bus 0: configuration mode 1
pci0: i/o space, memory space enabled, rd/line, rd/mult, wr/inv ok
pchb0 at pci0 dev 0 function 0
pchb0: Advanced Micro Devices product 0x700e (rev. 0x13)
agp at pchb0 not configured
ppb0 at pci0 dev 1 function 0: Advanced Micro Devices product 0x700f 
(rev. 0x00)
pci1 at ppb0 bus 1
pci1: i/o space, memory space enabled
vga1 at pci1 dev 5 function 0: Nvidia Corporation GeForce2 MX [NV11] 
(rev. 0xa1)
wsdisplay0 at vga1 kbdmux 1: console (80x25, vt100 emulation)
wsmux1: connecting to wsdisplay0
pcib0 at pci0 dev 7 function 0
pcib0: VIA Technologies VT82C686A (Apollo KX133) PCI-ISA Bridge (rev. 0x40)
pciide0 at pci0 dev 7 function 1: VIA Technologies VT82C686A (Apollo 
KX133) ATA100 controller
pciide0: bus-master DMA support present
pciide0: primary channel configured to compatibility mode
wd0 at pciide0 channel 0 drive 0: <ST360021A>
wd0: drive supports 16-sector PIO transfers, LBA addressing
wd0: 57241 MB, 16383 cyl, 16 head, 63 sec, 512 bytes/sect x 117231408 
sectors
wd0: 32-bit data port
wd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 5 (Ultra/100)
pciide0: primary channel interrupting at irq 14
wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 5 (Ultra/100) (using 
DMA data transfers)
pciide0: secondary channel configured to compatibility mode
pciide0: disabling secondary channel (no drives)
uhci0 at pci0 dev 7 function 2: VIA Technologies VT83C572 USB Controller 
(rev. 0x1a)
uhci0: interrupting at irq 9
usb0 at uhci0: USB revision 1.0
uhub0 at usb0
uhub0: VIA Technologie UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
uhci1 at pci0 dev 7 function 3: VIA Technologies VT83C572 USB Controller 
(rev. 0x1a)
uhci1: interrupting at irq 9usb1 at uhci1: USB revision 1.0
uhub1 at usb1
uhub1: VIA Technologie UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub1: 2 ports with 2 removable, self powered
viapm0 at pci0 dev 7 function 4
viaenv0 at viapm0
emuxki0 at pci0 dev 9 function 0: Creative Labs SBLive! EMU 10000 (audio 
multimedia, revision 0x04)
emuxki0: interrupting at irq 5
emuxki0: TriTech TR28023 codec; no 3D stereo
audio0 at emuxki0: full duplex, mmap, independent
Creative Labs PCI Gameport Joystick (miscellaneous input, revision 0x01) 
at pci0 dev 9 function 1 not configured
ex0 at pci0 dev 13 function 0: 3Com 3c905C-TX 10/100 Ethernet with mngmt 
(rev. 0x74)
ex0: interrupting at irq 11
ex0: MAC address 00:04:76:22:86:11
bmtphy0 at ex0 phy 24: Broadcom 3c905C internal PHY, rev. 6
bmtphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
isa0 at pcib0
com0 at isa0 port 0x3f8-0x3ff irq 4: ns16550a, working fifo
com1 at isa0 port 0x2f8-0x2ff irq 3: ns16550a, working fifo
pckbc0 at isa0 port 0x60-0x64
pckbd0 at pckbc0 (kbd slot)
pckbc0: using irq 1 for kbd slot
wskbd0 at pckbd0: console keyboard, using wsdisplay0
pms0 at pckbc0 (aux slot)
pckbc0: using irq 12 for aux slot
wsmouse0 at pms0 mux 0
lpt0 at isa0 port 0x378-0x37b irq 7
pcppi0 at isa0 port 0x61
midi0 at pcppi0: PC speaker
sysbeep0 at pcppi0isapnp0 at isa0 port 0x279: ISA Plug 'n Play device 
support
npx0 at isa0 port 0xf0-0xff: using exception 16
fdc0 at isa0 port 0x3f0-0x3f7 irq 6 drq 2
fd0 at fdc0 drive 0: 1.44MB, 80 cyl, 2 head, 18 sec
isapnp0: no ISA Plug 'n Play devices found
apm0 at mainbus0: Power Management spec V1.2
biomask e745 netmask ef45 ttymask ffc7
Kernelized RAIDframe activated
boot device: wd0
root on wd0a dumps on wd0b
root file system type: ffs
wsdisplay0: screen 1 added (80x50, vt100 emulation)
wsdisplay0: screen 2 added (80x50, vt100 emulation)
wsdisplay0: screen 3 added (80x50, vt100 emulation)
wsdisplay0: screen 4 added (80x50, vt100 emulation)
XFree86 aperture driver version 2.0
Pentium Pro MTRR support enabled

Pozdrawiam, Bartosz Kuzma.