anything smaller then 3-4 mb can be downloaded using some settings in mYTube like maemo-mapper does with the repository list. It will not distributed in deb (some people will like their own version of mplayer, or don't like to download a big deb), but can be downloaded after launching the application and choosing to donwload that stripped version of mplayer. Anyway, you've done more then enough with this version, with flv playback and seek working great. Cheers to that!
make clean && ./configure --prefix=/usr --confdir=/etc/mplayer --disable-faad-fixed --enable-alsa --disable-ossaudio --disable-pnm --disable-dvb --disable-dvbhead --disable-tga --disable-vcd --disable-man --disable-liba52 --disable-faad-internal --enable-menu --disable-md5sum --enable-freetype --disable-*** --enable-esd --disable-jpeg --disable-png --enable-sdl --enable-gstreamer --enable-mad --disable-theora --disable-tv --disable-tv-v4l2 --disable-tv-v4l1 --disable-radio --disable-aa --disable-caca --disable-fbdev --disable-directfb --disable-mencoder --disable-unrarexec --disable-largefiles --disable-dvdnav --disable-dvdread --disable-dvdread-internal --disable-libdvdcss-internal --disable-cdparanoia --disable-cddb --disable-bitmap-font --disable-sortsub --disable-enca --disable-macosx --disable-inet6 --disable-ftp --disable-w32threads --disable-*** --disable-*** --disable-win32dll --disable-qtx --disable-xanim --disable-real --disable-xvid --disable-x264 --disable-libnut --disable-tremor-internal --disable-libvorbis --disable-speex --disable-faad-internal --disable-faac --disable-ladspa --disable-libdv --disable-toolame --disable-twolame --disable-mp3lib --disable-liba52 --disable-libmpeg2 --disable-musepack --disable-libamr_nb --disable-libamr_wb --disable-libavutil_so --disable-libavcodec_so --disable-libavformat_so --disable-libpostproc_so --disable-libavcodec_mpegaudio_hp --disable-libpostproc_a --disable-encoder=snow --disable-decoder=ac3 --disable-decoder=vorbis --disable-encoder=vorbis --disable-decoder=aasc --disable-decoder=asv1 --disable-decoder=asv2 --disable-decoder=avs --disable-decoder=bmp --disable-decoder=cavs --disable-decoder=cinepak --disable-decoder=cljr --disable-decoder=cscd --disable-decoder=cyuv --disable-decoder=dca --disable-decoder=dsicinvideo --disable-decoder=dvvideo --disable-decoder=dxa --disable-decoder=eightbps --disable-decoder=ffv1 --disable-decoder=ffvhuff --disable-decoder=flashsv --disable-decoder=flic --disable-decoder=fourxm --disable-decoder=fraps --disable-decoder=gif --disable-decoder=h261 --disable-decoder=h263 --disable-decoder=h263i --disable-decoder=h263p --disable-decoder=h264 --disable-decoder=huffyuv --disable-decoder=idcin --disable-decoder=indeo2 --disable-decoder=indeo3 --disable-decoder=interplay_video --disable-decoder=jpegls --disable-decoder=kmvc --disable-decoder=ljpeg --disable-decoder=loco --disable-decoder=mdec --disable-decoder=mjpeg --disable-decoder=mjpegb --disable-decoder=mmvideo --disable-decoder=mpeg_xvmc --disable-decoder=mpeg1video --disable-decoder=mpeg2video --disable-decoder=mpeg4 --disable-decoder=mpegvideo --disable-decoder=msmpeg4v1 --disable-decoder=msmpeg4v2 --disable-decoder=msmpeg4v3 --disable-decoder=msrle --disable-decoder=msvideo1 --disable-decoder=mszh --disable-decoder=nuv --disable-decoder=pam --disable-decoder=pbm --disable-decoder=pgm --disable-decoder=pgmyuv --disable-decoder=png --disable-decoder=ppm --disable-decoder=qdraw --disable-decoder=qpeg --disable-decoder=qtrle --disable-decoder=rawvideo --disable-decoder=roq --disable-decoder=rpza --disable-decoder=rv10 --disable-decoder=rv20 --disable-decoder=smacker --disable-decoder=smc --disable-decoder=snow --disable-decoder=sp5x --disable-decoder=svq1 --disable-decoder=svq3 --disable-decoder=targa --disable-decoder=theora --disable-decoder=tiertexseqvideo --disable-decoder=tiff --disable-decoder=truemotion1 --disable-decoder=truemotion2 --disable-decoder=tscc --disable-decoder=ulti --disable-decoder=vc1 --disable-decoder=vcr1 --disable-decoder=vmdvideo --disable-decoder=vmnc --disable-decoder=vp3 --disable-decoder=vp5 --disable-decoder=vp6 --disable-decoder=vp6f --disable-decoder=vqa --disable-decoder=wmv1 --disable-decoder=wmv2 --disable-decoder=wmv3 --disable-decoder=wnv1 --disable-decoder=x264 --disable-decoder=xan_wc3 --disable-decoder=xl --disable-decoder=xvid --disable-decoder=zlib --disable-decoder=zmbv --disable-decoder=dvbsub --disable-decoder=dvdsub --disable-decoder=pcm_alaw --disable-decoder=pcm_mulaw --disable-decoder=pcm_s8 --disable-decoder=pcm_s16be --disable-decoder=pcm_s16le --disable-decoder=pcm_s24be --disable-decoder=pcm_s24daud --disable-decoder=pcm_s24le --disable-decoder=pcm_s32be --disable-decoder=pcm_s32le --disable-decoder=pcm_u8 --disable-decoder=pcm_u16be --disable-decoder=pcm_u16le --disable-decoder=pcm_u24be --disable-decoder=pcm_u24le --disable-decoder=pcm_u32be --disable-decoder=pcm_u32le --disable-decoder=interplay_dpcm --disable-decoder=roq_dpcm --disable-decoder=sol_dpcm --disable-decoder=xan_dpcm --disable-decoder=adpcm_4xm --disable-decoder=adpcm_adx --disable-decoder=adpcm_ct --disable-decoder=adpcm_ea --disable-decoder=adpcm_g726 --disable-decoder=adpcm_ima_dk3 --disable-decoder=adpcm_ima_dk4 --disable-decoder=adpcm_ima_qt --disable-decoder=adpcm_ima_smjpeg --disable-decoder=adpcm_ima_wav --disable-decoder=adpcm_ima_ws --disable-decoder=adpcm_ms --disable-decoder=adpcm_sbpro_2 --disable-decoder=adpcm_sbpro