neothesia-cli creates a video file with no sound

$ ./neothesia-cli-ubuntu/neothesia-cli ./Tetris\ -\ Tetris\ Main\ Theme.mid ./neothesia-cli-ubuntu/out.mp4
[libx264 @ 0x5f56a0dc3100] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 0x5f56a0dc3100] profile High 4:4:4 Predictive, level 4.2, 4:2:0, 8-bit
[libx264 @ 0x5f56a0dc3100] 264 - core 164 r3108 31e19f9 - H.264/MPEG-4 AVC codec - Copyleft 2003-2023 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=0 mixed_ref=1 me_range=16 chroma_me=1 trellis=0 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=0 chroma_qp_offset=0 threads=18 lookahead_threads=3 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=2 keyint=12 keyint_min=1 scenecut=40 intra_refresh=0 rc=cqp mbtree=0 qp=0
Output #0, mp4, to './neothesia-cli-ubuntu/out.mp4':
  Stream #0:0: Video: h264, yuv420p, 1920x1080, q=2-31, 400 kb/s, 60 tbn
    Side data:
      cpb: bitrate max/min/avg: 0/0/400000 buffer size: 0 vbv_delay: N/A
  Stream #0:1: Audio: aac (LC), 44100 Hz, stereo, fltp, 64 kb/s
Encoding started:
 Encoded 2237 frames (37s, 100%) in 35s[aac @ 0x5f56a1032000] Qavg: 65495.648
[libx264 @ 0x5f56a0dc3100] frame I:188   Avg QP: 0.00  size: 12045
[libx264 @ 0x5f56a0dc3100] frame P:2057  Avg QP: 0.00  size:   940
[libx264 @ 0x5f56a0dc3100] mb I  I16..4: 96.5%  0.0%  3.5%
[libx264 @ 0x5f56a0dc3100] mb P  I16..4:  1.7%  0.0%  0.0%  P16..4:  1.8%  0.0%  0.0%  0.0%  0.0%    skip:96.4%
[libx264 @ 0x5f56a0dc3100] 8x8 transform intra:0.0% inter:20.4%
[libx264 @ 0x5f56a0dc3100] coded y,uvDC,uvAC intra: 4.0% 1.8% 1.8% inter: 0.1% 0.3% 0.3%
[libx264 @ 0x5f56a0dc3100] i16 v,h,dc,p: 90%  9%  1%  0%
[libx264 @ 0x5f56a0dc3100] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 13% 37% 45%  3%  0%  0%  2%  0%  0%
[libx264 @ 0x5f56a0dc3100] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 61% 17% 18%  1%  1%  0%  1%  0%  1%
[libx264 @ 0x5f56a0dc3100] i8c dc,h,v,p: 95%  2%  4%  0%
[libx264 @ 0x5f56a0dc3100] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x5f56a0dc3100] ref P L0: 58.4%  0.0%  1.7% 39.9%
[libx264 @ 0x5f56a0dc3100] kb/s:897.67

The sound file should work correctly (thanks for helping troubleshoot the soundfont file issue). It may be that the soundfont file isn't loading correctly when invoking neothesia-cli, but I don't see a reference to which soundfont file was used in the output copied/pasted above. The default.sf2 file is located in ~/.config/neothesia and works with normal neothesia (GUI). The video does render video correctly, there's simply no sound.

Reproduce the supplied neothesia-cli command and compare its audio behavior with normal Neothesia using ~/.config/neothesia/default.sf2. Trace the CLI's soundfont and audio initialization, then verify that the generated MP4 contains audible sound and that the CLI output makes the soundfont usage clear.