1. Monitor out is for video signals, but you can use Tape Out, Zone 2, or Zone 3. When using Tape Out, switching sources will be done by main selector. Zone 2 and Zone 3 have switching that is separate from the main selector and each other. None of these will output signals from digital inputs, analog inputs only.
2,3,3a. Sorry, can't help here, but do know the 9.9 was current before the XM/Sirius merger. Just not sure what options you have since the 9.9 has separate inputs, and later equipment had a single input for satellite radio. Probably best to contact XM/Sirius.
4. The Ethernet and RS232 ports on the back panel are used for connecting the 9.9 to external controllers such as Creston, not internet or streaming.
2,3,3a. Sorry, can't help here, but do know the 9.9 was current before the XM/Sirius merger. Just not sure what options you have since the 9.9 has separate inputs, and later equipment had a single input for satellite radio. Probably best to contact XM/Sirius.
4. The Ethernet and RS232 ports on the back panel are used for connecting the 9.9 to external controllers such as Creston, not internet or streaming.