1) Turn off "1 touch play": Settings/System/Control other devices
Supported media file types
Different Roku devices support different formats. Newer firmware may support additional formats. The type of audio formats supported is dependent on the type of TV or A/V receiver your Roku device is connected to. Formats supported by your Roku device can be viewed by accessing the ?/Help pages from the Media Device and the Media Type selection screens.
The following file formats are supported:
- Video – H.264/AVC (.MKV, .MP4, .MOV)
- Audio – AAC (.MKV, .MP4, .MOV); MP3(.MP3, .MKV); WMA (.ASF, .WMA, .MKV), FLAC (.FLAC, .MKV), PCM (.WAV, .MKV, .MP4, .MOV), AC3/EAC3 (.MKV,.MP4. .MOV, .AC3), DTS (.MKV, .MP4, .MOV,.DTS), ALAC (.MKV, .MP4, .MOV, .M4A), Vorbis (.OGG,.MKV,.WEBM)
- Playlists –.M3U, .M3U8, .PLS
- Image – JPG, PNG, GIF (non-animated)
The following media formats are supported on Roku devices that support 4K
- 4K Video – H.265/HEVC (.MKV, .MP4, .MOV); VP9 (.MKV, .WEBM)
- 4K Video – H.264 (Roku Premiere, Premiere+, and Ultra only)
The following media formats are supported on Roku TVs and some Roku players
- The Roku Media Player channel will not display unsupported file types or files it has determined cannot be played by your Roku device.
- DRM-protected content is not supported.
3) Known issue, there are some solutions/workarounds, depending. You can also use an IR-only universal remote.
4) Yes, you should - if you have a Roku 2020 (model 4800) make sure you put it in "Auto passthrough" mode: Settings/Audio/HDMI - If that doesnt work, try manually configuring it for "PCM-Stereo".